Re: [darktable-user] Installing darktable 4.6 in Ubuntu 22.04.3 why is it so hard?

[Niranjan Rao]

On 12/27/23 05:04, Andrew Greig wrote:


I have backed up my ~config/darktable of 4.4.2 and

I have issues with the installation, what is best? apt snap or 
flatpack? why do we have such a shit fight?
In 2002 I was using Mandrake and it was as smooth as.  Best detection 
and configuration of hardware because of the outstanding installer, 
but here we are 21 years later and things are really shit!!


I would like to install 4.6 because I purchased an Olympus TG-7, and 
DT can open the .orf files.


Normally I would wait three months before upgrading but I am keen to 
open the .orf files I have saved but have not been able to open.


Kind regards

Andrew

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On Ubuntu 22.04, I got update notification on next day, updated it. No 
issues at all. I have added 
https://software.opensuse.org/download.html?project=graphics:darktable=darktable 
to my update site. Hope this helps.



Good luck,


Niranjan


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Re: [darktable-user] Darktable 4.4 on Ubuntu 22.04

[Niranjan Rao]

On 7/3/23 19:48, Patrick Shanahan wrote:

don't really know but would bet it is.  a simple proof would be to try it.

warning, backup your library.db before trying as I believe 4.41 library
is not backward compatible with 4.40.


The question becomes where to get it from? OBS repository does not show 
it nor does Ubuntu updates. I don't expect Ubuntu updates to update as 
historically they haven't once stable release is released. But one could 
get binaries from OBS which seems not to be happening. Hence the question.



Regards,

Niranjan


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Re: [darktable-user] Darktable 4.4 on Ubuntu 22.04

[Niranjan Rao]

On 7/3/23 20:27, William Ferguson wrote:

I'm running 4.4.1  and 4.5 on 22.04 without any problems


Where did you download it from? Or did you build it yourself?


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[darktable-user] Darktable 4.4 on Ubuntu 22.04

[Niranjan Rao]

Greetings,


It's not clear to me if latest release of darktable is supported on 
22.04. Opensuse OBS repository shows darktable 4.4 only for 23.04. Is it 
supported on Ubuntu 22.04?



Regards,


Niranjan


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Re: [darktable-user] Color calibration overloaded?

[Niranjan Rao]

I am not an expert by any means, but I came across this link posted in 
this list recently and was reading about it.


Perhaps this link might help to answer few questions as it has some 
explanation.


https://discuss.pixls.us/t/introducing-color-calibration-module-formerly-known-as-channel-mixer-rgb/21227

Regards,

Niranjan

On 7/14/22 08:15, Mikael Ståldal wrote:
Is it only me who thinks that the color calibration module is quite 
overloaded with functionality, at least from a UI perspective?


The user manual says

"This simple yet powerful module can be used in the following ways:"

then lists five ways for it to be used, and then follows a very long 
description of all the options.


Not sure I would agree this is a "simple" module. Maybe from a 
technical/mathematical standpoint, but not from usage.


To me, it would make more sense if the CAT part was its own module, 
and the channel mixing was its own.
 


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Re: [darktable-user] darktable 4.0.0 released

[Niranjan Rao]

Greetings,

Tried to download the installation and getting following error. 
Basically followed the steps at 
https://software.opensuse.org/download.html?project=graphics:darktable=darktable 
for Ubuntu 20.04


Get:8 
http://download.opensuse.org/repositories/graphics:/darktable/xUbuntu_20.04 
InRelease [1,533 B]
Err:8 
http://download.opensuse.org/repositories/graphics:/darktable/xUbuntu_20.04 
InRelease
  The following signatures were invalid: EXPKEYSIG 040524A84C70D8B5 
graphics:darktable OBS Project 

Reading package lists... Done
W: GPG error: 
http://download.opensuse.org/repositories/graphics:/darktable/xUbuntu_20.04 
InRelease: The following signatures were invalid: EXPKEYSIG 
040524A84C70D8B5 graphics:darktable OBS Project 

E: The repository 
'http://download.opensuse.org/repositories/graphics:/darktable/xUbuntu_20.04 
InRelease' is not signed.
N: Updating from such a repository can't be done securely, and is 
therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user 
configuration details.


I've installed from this site before and don't remember encountering 
this issue. Do I need to do something else?


Regards,

Niranjan

On 7/2/22 09:50, Pascal Obry wrote:

We're proud to announce the new feature release of darktable, 4.0.0!

The github release is here: 
[https://github.com/darktable-org/darktable/releases/tag/release-4.0.0](https://github.com/darktable-org/darktable/releases/tag/release-4.0.0).

As always, please don't use the autogenerated tarball provided by
github, but only our tar.xz file. The checksums are:

```
$ sha256sum darktable-4.0.0.tar.xz
1416f8f59717e65a6220541aaa12eacca93888ce5176f2c9ab6c17b9cc53cc2d  
darktable-4.0.0.tar.xz
$ sha256sum darktable-4.0.0.dmg
addab784af18bafa303340e754c00084c126e61c3d5b93006f8e6d602f838203  
darktable-4.0.0.dmg
$ sha256sum darktable-4.0.0-win64.exe
d0e09efb2f74beae9f5387a296d366c160d9fb87e571c9559c53cd0111b7b955  
darktable-4.0.0-win64.exe
```

When updating from the stable 3.8.x series, please bear in
mind that your edits will be preserved during this process, but the new
library and configuration will no longer be usable with 3.8.x.

You are strongly advised to take a backup first.

 Important note: to make sure that darktable can keep on supporting the raw 
file format for your camera, *please* read [this 
post](https://discuss.pixls.us/t/raw-samples-wanted/5420?u=lebedevri) on 
how/what raw samples you can contribute to ensure that we have the *full* raw 
sample set for your camera under CC0 license!

Since darktable 3.8:

- Almost 1600 commits to darktable+rawspeed
- 586 pull requests handled
- 123 issues closed

## The Big Ones

The following is a summary of the main features added to darktable 4.0. These 
features
are described more fully in the user manual and accompanying blog post.

- Color and exposure mapping

   A new feature in the "exposure" and "color calibration" modules allows you to
   define and save a target color/exposure for the color pickers, in order to
   match any source object in the image against an arbitrary target
   color. This can be used to perform white balance
   (chromatic adaptation) against non-gray objects of known color, or to
   ensure the color consistency of an object across a series of images.

- Filmic v6

   Filmic v6 introduces new color science. This change removes the mandatory 
desaturation
   close to medium white and black and replaces it with a true gamut
   mapping against the output (or export) color space. This allows for more
   saturated colors, notably in blue skies.

   For users who still prefer the "desaturated highlights" look,
   you can still do this by disabling chroma preservation, but v6 adds a
   hue handcuff to prevent the traditional hue shift that comes with this
   method (where saturated blue skies degrade to cyan and saturated red to 
yellow).

   This gamut sanitization is the third and last to be added to darktable,
   which now has a fully-sanitized color pipeline from input (color 
calibration),
   through artistic changes (color balance rgb) to output (filmic v6). Users
   can now color-grade pictures safely in the knowledge that invalid input
   colors can be recovered in the least destructive fashion possible early
   in the pipeline, and valid colors can't be pushed out of gamut along the 
pipeline.

   Note: If modules are applied after filmic in the pipeline, they
   don't benefit from this gamut mapping and rely on LittleCMS2 (if
   enabled) at the final export stage, which does not gamut map as it
   should, and probably never did.

- Guided laplacian highlight reconstruction

   A new "guided laplacian" method has been added to the "highlight
   reconstruction" module. This uses an iterative and multi-scale wavelet
   scheme to extract valid details from non-clipped RGB channel(s) if any,
   uses these details to guide the reconstruction of clipped channels, and 
finally
   propagates the color gradients from 

[darktable-user] Exposure module, what happens here?

[Niranjan Rao]

Greetings,

darkatable version 3.8.1, on Ubuntu 20.04


I'm trying to understand what happens when I change the exposure module 
mode from automatic to manual. I've noticed it many times, if I change 
the mode from automatic to manual, application shows "working" message 
and does something to image. I've not changed any other settings of 
exposure module yet, just switching the mode.


For me, usually results are more desirable when I just switch the module 
from automatic to manual mode. Whatever it does, it's better for me, but 
I haven't understood it and trying to figure what I have to do use 
automatic mode more effectively. Currently, I just change the mode and 
be happy about it.



Regards,


Niranjan


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Re: Fwd: [darktable-user] Looking for easier way

[Niranjan Rao]

On 4/20/22 20:56, Bruce Williams wrote:

n the Collections module, select Date Taken, and then use this format:
[:MM:DD;:MM:DD]


Unfortunately it did not work, I tried a simple pattern like following 
with and without rectangular brackets. I have photos on both dates. If I 
remove ";" onwords or entry before it, corresponding dates do show up.


2022:03:07;22-03-08


What am I doing wrong?


Niranjan


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[darktable-user] Looking for easier way

[Niranjan Rao]

On darktable 3.8.1 Ubuntu 20.04


I am looking for easier or faster way to select images based on date 
range. Collections does allow me to add or remove the images for dates 
but selecting images for say couple of weeks when you have photos taken 
almost every day in month means selecting 14 different dates manually 
and every time choosing date filter, year, month and then desired date.


I vaguely remember using date range somewhere in darktable. Am I 
mistaken and getting confused about some other tool? If so, is there any 
other way to filter images taken in a certain date range? It can 
potentially span across month and/or year.



Basic goal is to tag the images taken in certain weeks.


Regards,


Niranjan


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[darktable-user] Style with automatic selection

[Niranjan Rao]

On darktable 3.8.0


Many modules have a dropper or equivalent to pickup the optimized 
values, examples are filmic and color calibration modules. Question is 
when I create style from this, will it use the actual value or for the 
new style it will treat as if dropper is clicked.



Most of the times, I am happy with the results of automatically picked 
up values. However I'm not really sure what will happen if I apply say a 
value picked up with in color calibration with a dropper to different set.



Regards,


Niranjan


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Re: [darktable-user] Color calibration question

[Niranjan Rao]

On 1/16/22 6:47 PM, Terry Pinfold wrote:

Hi Niranjan,
     when I open an image in darktable the white balance defaults to 
as shot by camera. Color calibration is not automatically applied in 
my version of DT, but white balance is.


Hi Terry,

Again, it could be my misunderstanding. I do see color calibration in 
the pipeline when I open the image. What does that instance do?



Question is stemming partly from other postings on list. Questions 
essentially state that expectations are not met when image is opened 
initially. I do understand that (raw) image needs to be developed to 
your liking or I can develop my own style etc, but many of these 
questions can be answered by default pipeline.



Incidentally, can I create my style where color calibration is done 
based on value picked up by the dropper? Essentially, initial steps I 
perform is clicking on dropper of filimic and color calibration before 
proceeding to do anything else.



Regards,

Niranjan


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[darktable-user] Color calibration question

[Niranjan Rao]

On darktable 3.8.0, Ubuntu 20.04


This is most likely operator error or operator's lack of understanding. 
However, I'm still curious to find out why this happens.



When I open a unedited raw file, darktable picks up certain settings for 
color calibration. Settings chosen by darktable are rarely what I saw 
with my own eyes or my idea of how image should look like. Usually, I go 
to color calibration module and click on dropper. This time it does 
pickup correctly and image looks more like how I saw it.


Clicking dropper module suggests darktable is aware of proper settings 
and is able to figure out. Why does it not apply same settings in the 
initial workflow/module it does when a new image is opened?



Regards,


Niranjan


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Re: [darktable-user] Raw only?

[Niranjan Rao]

On 1/11/22 7:13 AM, Chas G wrote:
In a current thread, someone asked, "If you are more satisfied with 
the in-camera jpg, why are you bothering with dt and why are you 
shooting raw?"


I know that a raw file can offer more data, and that darktable is 
thought of mainly as a raw converter. My take is that darktable can - 
and should -  be thought of as an image editor that happens to be able 
to work with raw files.


The large majority of images I use darktable on are jpgs from a cell 
phone. I do have a Nikon DSLR and and can shoot raw, but I frequently 
do not have the big camera with me.


Top line cell phones produce shockingly good images nowadays - at 
least when the lack of a short lens or a long lens is not a problem. 
The old maxim that the best camera you have for a particular situation 
is the one you happen to have with you is still true. I have the cell 
phone with me more than I have a professional camera.


If I never shot another raw again in my life, that would not change my 
view of darktable as the first choice in image editors. The speed, 
power, and fluidity of work via darktable appear unmatched.


I'm not picking on the comment or the commenter. Far from it. It just 
happens to give me the chance to address a notion that deserves a 
wider audience, that darktable, as an editing tool, is bigger and more 
powerful than is generally advertised. Darktable is the best editor 
out there. Not just for raw files.

We all



 
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I read this thread with great interest and want to thank all involved 
and other community members. We all have seen how quickly things get 
polarized on internet. And this thread was excellent example where 
things can be discussed and if needed, resolved without a fight.



Thank you community members and of course the developers whose product 
brings in sensible people.



Regards,


Niranjan


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Re: [darktable-user] Broken images after upgrade to 3.8.0

[Niranjan Rao]

On 12/31/21 3:01 PM, Bernhard wrote:



Niranjan Rao schrieb am 31.12.21 um 23:53:
I don't have camera anymore to contribute but do have images which 
were supported at one time.

This I don't understand:
Looks as if this camera provides
4.000 x 3.000 Pixel (4:3)
2.816 x 2.112 Pixel (4:3)
2.048 x 1.536 Pixel (4:3)

So simply look into your archive and find some landscape image without 
persons with these resolutions and upload to raw.pixls.us ...


I'd be happy to do that, but I can't open the images right now. I'll see 
if other machine cooperates. I'm doubtful if I will have all these 
variations.



Regards


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Re: [darktable-user] Broken images after upgrade to 3.8.0

[Niranjan Rao]

On 12/31/21 2:30 AM, thokster wrote:

Release note:

( https://www.darktable.org/2021/12/darktable-3.8.0-released/ )

Suspended Support
No samples on raw.pixls.us

...
Nikon D1H
Nikon D2H
Nikon D3S
Olympus E-10
Olympus SP320
Olympus SP570UZ
Panasonic DMC-FX150
Panasonic DMC-G2

...

Am 31.12.21 um 03:25 schrieb Niranjan Rao:

On ubuntu 20.04.3, darktable 3.8.0


I upgraded day before yesterday and discovered that support for 
Panasonic Lumix seems to be broken. These are old images and have 
been sitting in database through various version upgrades. Now when I 
try to open a file with extension RW2 (Model as reported by 
lighttable image information is DMC-G2, darkroom is not able to open 
it. Lightroom shows me the error message about please check if camera 
model that produced image is supported



Images were already supported as they are tagged in my database and 
showed up in the search based on tags. I've not seen this problem for 
any other images I have.



What broke and more importantly how should I fix it? I don't mind 
getting my hands dirty on terminal or writing shellscripts or fooling 
around command line parameters if that's going to help to debug the 
issue.

d

Happy to provide the sample if needed at sharable location.


Regards,


Niranjan

 


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Interesting discussion this thread has brought up. However I still have 
a problem and as of moment looks like without a solution. I don't have 
camera anymore to contribute but do have images which were supported at 
one time. Wondering how support was added originally if there were no 
images earlier and what changed.


I've another PC where I have not upgraded yet. Assuming that I'm able to 
open the images on the other PC, any recommendations to save images?


Regards,


Niranjan


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Re: [darktable-user] Broken images after upgrade to 3.8.0

[Niranjan Rao]

On 12/30/21 6:33 PM, Patrick Shanahan wrote:

* Niranjan Rao  [12-30-21 21:27]:

On ubuntu 20.04.3, darktable 3.8.0


I upgraded day before yesterday and discovered that support for Panasonic
Lumix seems to be broken. These are old images and have been sitting in
database through various version upgrades. Now when I try to open a file
with extension RW2 (Model as reported by lighttable image information is
DMC-G2, darkroom is not able to open it. Lightroom shows me the error
message about please check if camera model that produced image is
supported


Images were already supported as they are tagged in my database and showed
up in the search based on tags. I've not seen this problem for any other
images I have.


What broke and more importantly how should I fix it? I don't mind getting my
hands dirty on terminal or writing shellscripts or fooling around command
line parameters if that's going to help to debug the issue.


Happy to provide the sample if needed at sharable location.


is your particular camera listed as supported on darktable.org?


I've not checked recently, but at some point it was surely supported. 
Don't know if support is removed later. I do remember working on these 
images and there are still XMP files in the directory.



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[darktable-user] Broken images after upgrade to 3.8.0

[Niranjan Rao]

On ubuntu 20.04.3, darktable 3.8.0


I upgraded day before yesterday and discovered that support for 
Panasonic Lumix seems to be broken. These are old images and have been 
sitting in database through various version upgrades. Now when I try to 
open a file with extension RW2 (Model as reported by lighttable image 
information is DMC-G2, darkroom is not able to open it. Lightroom shows 
me the error message about please check if camera model that produced 
image is supported



Images were already supported as they are tagged in my database and 
showed up in the search based on tags. I've not seen this problem for 
any other images I have.



What broke and more importantly how should I fix it? I don't mind 
getting my hands dirty on terminal or writing shellscripts or fooling 
around command line parameters if that's going to help to debug the issue.



Happy to provide the sample if needed at sharable location.


Regards,


Niranjan


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Re: [darktable-user] Re: Bouncing messages from darktable-user@lists.darktable.org

[Niranjan Rao]

It's my experience too. Only happens with this mailing list and no other.

Regards,

Niranjan
On 12/13/21 9:38 AM, Jean-Luc CECCOLI wrote:


Hello,

I have been receiving this kind of alert at least three times in two 
weeks.
As I am not accustomed to spamming others - o-kay, I admit the things 
I write from time to time may not be very accurate -, I just wonder 
why this is happening.
Unless I am not the only one facing this, in which case it might be a 
servers' problem.
However, how can I check and retrieve the message(s) that are 
mentioned as bounced ?


Rgrds,

J.-Luc


envoyé : 11 décembre 2021 à 08:00
de : darktable-user+ow...@lists.darktable.org
à : jean-luc.cecc...@wanadoo.fr
objet : Bouncing messages from darktable-user@lists.darktable.org


Hi, this is the Mlmmj program managing the
 mailing list.

Some messages to you could not be delivered. If you're seeing this
message it means things are back to normal, and it's merely for your
information.

Here is the list of the bounced messages:
- 12057



 
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Re: [darktable-user] Module color space defaults

[Niranjan Rao]

On 11/8/21 4:04 PM, Matt Maguire wrote:
I guess you are talking about the blending mode. If you previously 
opened this image in darktable, with the preferences set to "display 
referred" mode, then this will be recorded in the image history.


If you are not using blending, then this setting won't matter at all 
-- if you later decide to use blending for that module, just manually 
select the scene-referred blending mode. Or, if you select step 0 in 
the history stack and choose "discard history" it will throw away all 
the previous edits for that image, and the blending mode should then 
align to the mode you have currently selected in the preferences.



On Tue, 9 Nov 2021 at 08:35, Niranjan Rao <mailto:nhr...@gmail.com>> wrote:


Greetings,

On darktable 3.6.1.


I am using scene deferred workflow, when opening a new image, color
calibration, filmic etc modules are used when I open a new raw
image as
per workflow documentation.


For many modules (e.g. exposure module) , I notice that module color
space defaults are set to RGB display and not RGB (scene). My
understanding is if I change exposure without changing the color
space,
it will be done in RGB display color space.


Does this mixing of color spaces affect pipeline? Is there any
particular reason why module default color spaes are not getting
changed
even if preferences say use scene deferred workflow?


Regards,

Niranjan



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It's not aligning. All these images are new and never imported as stated 
in original message.




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Re: [darktable-user] It gets worse

[Niranjan Rao]

It sounds like you used copy and import. That will copy the files to new 
directory and name it according to options set. One of the option is 
keep the original name. The fine manual has good description.


Personally, I like the new scheme because it allows me to import from 
multiple sources for one event.


Looks like you should have used add to library rather than copy and import.

Best,

Niranjan

On 10/29/21 5:26 AM, Andrew Greig wrote:

Hi,

Upon upgrading to 3.6 I have now discovered that DT has renamed all of 
the images in the folder I opened today with 20211029- 1104.CR2.


I have never set that up, I only ever run on the camera images 
numbers, how else do I get to keep track of the frames so that I can 
prepare the next prefix in my numbering scheme. The only numbers that 
matter are from the camera, I can only guess that these renamed images 
are copied somewhere that DT knows, but why would I want to have two 
versions of my RAW files.


I am shell shocked and bewildered, why is DT fcking with my Data storage?

I am really distressed, this has been a bad day for me.

Andrew Greig
 


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Re: [darktable-user] Sticky mouse?

[Niranjan Rao]

My observation is same, never had problem with earlier releases or any 
other software.


I don't use Gimp, but I think I would have noticed accidental drag and 
drop for any other software. A simple mouse move ends up dragging image 
from darktable or changing properties of module.


I believe chromium uses GPU behind the scenes - at least based on 
command line options and other pointers in source code. That one and any 
other programs I normally use don't exhibit this behavior. If mouse 
button is stuck, chromium would select the region on simple mouse move.


I'll install Gimp and see if I can reproduce the problem.  PC was not 
heavily loaded. I had barely opened one image from film strip at the 
bottom and was planning to choose one of the modules after adjusting 
exposure. Moving mouse around caused exposure module to go berserk and 
moved every slider. I did switch to other programs to see if I can 
reproduce and if it's mouse problem with no luck.


Regards,

Niranjan

On 10/10/21 12:43 PM, Coding Dave wrote:
I can confirm that I had the same behavior on my notebook around the 
release of 3.6. Not sure about the exact version of dt, because at 
that time I did not have much time for it. I was running xfce on 
manjaro with Nvidia and OpenCL. Since then 3 things have changed: I 
switched (for another reason) to gnome shell, I updated the system and 
darktable to the latest version, which means master for dt, and I am 
not facing that issue any more.


Cheers
Dave

Am So., 10. Okt. 2021 um 18:28 Uhr schrieb ternaryd 
mailto:terna...@gmail.com>>:


On Sun, 10 Oct 2021 08:32:42 -0700
Niranjan Rao mailto:nhr...@gmail.com>> wrote:

> I have noticed this behavior only for
> darktable on Ubuntu 20.04. Every now and
> then darktable starts reacting as if I'm
> pressing and holding down my left mouse
> button.

Have you observed the same with other programs
using opencl? I think Gimp could be a
candidate; try to keep it busy for a while and
see if that happens again. If so, my first
guess would be to blame the video driver and/or
the version of the x server. Is there a version
you could update to? Anyway, you may increase
the chances of a sensible answer posting this
question on an ubuntu list.

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[darktable-user] Sticky mouse?

[Niranjan Rao]

Greetings,


I have noticed this behavior only for darktable on Ubuntu 20.04. Every 
now and then darktable starts reacting as if I'm pressing and holding 
down my left mouse button. Many times, this results into many unwanted 
changes even when just traversing around modules.



My first instinct was mouse button had gone bad. But any other 
application does not show similar symptoms. For example, right now, 
writing this email in thunderbird does not result in any unwanted 
selections or other effects of any mouse button being down.



Usually a reboot solves the problem. Restarting darktable does not help. 
I've a laptop and both touchpad and external mouse show this behavior. 
I've command line scripts that can enable/disable either of them and 
have tested the behavior independently for each device. I find it very 
hard to believe both devices going bad at the same time and problem 
getting resolved after reboot apart from the fact that issue happens 
only with darktable.



Anyone else noticed similar behavior? Any solutions?


Regards,


Niranjan


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Re: [darktable-user] Adding a browser

[Niranjan Rao]

Tagging and search capabilities in darktable are excellent. In case if 
it's not clear, tags can be hierarchical like family|person and you can 
search either by family or by person.


While it's not easily apparent, collections in lighttable is very 
powerful. It allows you to do searches what would amount SQL's "and" and 
"or" operations. It also allows you to filter based on date, location.


So you can easily search for images taken by my X camera with lens Y and 
having ISO blah - just as an example.


While I don't have half a million images in my collection, I do maintain 
what I consider a sizeable collection. After I went through tagging and 
geotagging exercise I've never faced any issues locating the images I want.


I still have following items in my wishlist though. It could be there, 
but I have not explored it enough. There is a custom sort option, but 
have not spent time to see what it does.


 * Filtering the current view based on some other criteria apart from
   ratings and rejected. It's pain to keep adjusting collection, but
   similar functionality can be achieved.
 * Sorting by multiple fields. For a family tree like Grand Father |
   Children | Grand children, sometimes I have a need to sort by
   children and then grand children to keep each family together.

Regards,


Niranjan

On 10/8/21 1:30 PM, Terry Pinfold wrote:

Hi Lorenzo,
       now I realise you are on the Windows environment like myself. I 
will mention it is possible to download Adobe's Bridge program free of 
charge and it might be worth a look. I have Adobe's Lightroom  
perpetual and subscription licenses. I do love LR's catalog system and 
I would cringe at the thought of asking it to handle 500,000 images in 
a single database. I would divide my images into different catalogs 
for speed and easy to find what I want. 500,000 images in any single 
catalog sounds a challenge for the program because the database would 
be so bloated.


Despite having a comprehensive suite of programs from Adobe. Maybe all 
of them. I defer to DT for my editing. It is so much more fun and 
capable. Occasionally I have to use GIMP as well because even DT can 
not do everything. I have recently started using the color balance rgb 
module by employing the 'add basic colorfulness' preset found in the 
hamburger. Again someone on the list suggested this so I tried it. 
This adds colorfulness to my images to give results more comparable to 
other programs (not that I am advocating comparing programs). It has 
made me explore this module further and I am learning to work 
vibrance, saturation, chroma and brilliance based upon 
separate adjustments to the shadows, midtones and highlights. I am 
just being continually blown away by the editing capabilities of DT 
compared to Lightroom.


This thread has made me look more at the capabilities of the 
lightttable in DT. I am impressed at the improvements I am seeing 
here. Yesterday I explored the tagging module following the suggestion 
by Patrick and was pleasantly surprised how it would find images based 
on keywords (tags in DT speak). I could then right click on the 
keyword and have a collection of photos display in the lighttable 
grid. This is showing me that DT is far more capable at organising and 
finding photos than I realised. Once again well done to the 
developers. I will continue to explore the capabilities of lighttable 
as I get the chance. I am hoping I can use it to synchronise my 
various backup hard drives for images. At this point of time I use LR 
solely for this reason because it is very capable of doing that taska 
dn I am used to the program, but maybe in time I may come to realise 
that DT could also do. But I would not ask the developers to bloat DT 
to try and match LR. The number one priority for DT should remain 
editing. DT also edits JPG and Tiff files, but of course editing RAW 
files is the best option in any program.


cheers,
     Terry

On Sat, 9 Oct 2021 at 06:53, Lorenzo Fontanella 
mailto:fontanellalore...@gmail.com>> wrote:


Good evening everyone.
Thank you very much for many answers and for sharing your point of
view that I share.
For sure I'll continue to use an image organizer as a selection
base and I'll configure it (good suggestion) in such a way that it
opens directly the files in DT.
Now I use XnView MP in Windows environment, but I will see if I
can find better, although I don't think so.
Grazie Maurizio, for recommending Digikam, but it's not for me
considering that for better or worse it always requires importing
into a database and I don't like that.

To understand:
my philosophy is to manage the amount of data according to a
criterion based on names and codes given to the folders and store
iptc data (keyword) inside the jpeg files so that now as in the
future, with any software and on any platform I can find
everything with the same criterion; and everything is 

[darktable-user] Darktable site down?

[Niranjan Rao]

Greetings,

Looks like SSL configuration issue. Chrome complains with following 
error message


This site can’t provide a secure connection www.darktable.org uses an 
unsupported protocol.

ERR_SSL_VERSION_OR_CIPHER_MISMATCH


Curl prints following error message

curl: (35) error:14094410:SSL routines:ssl3_read_bytes:sslv3 alert 
handshake failure



Regards,


Niranjan


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[darktable-user] Web gallery type export

[Niranjan Rao]

Greetings,

Using darktable 3.6.0


When you export image as web gallery, it exports thumbnail and the 
image. Is it possible to do it using regular export commands?



I want to do something similar to web gallery with tag clouds using tags 
in the images. I can extract tags out of darktable database and create 
the cloud - so that is not a (big) problem, but official darktable way 
is always preferred if such a way exists.



Regards,


Niranjan


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[darktable-user] Question about exposure and blend mode

[Niranjan Rao]

Greetings,

On darktable 3.6.0


I saw this in one of the videos on YouTube and trying to understand what 
exactly is happening. The technique used was increase the exposure to 
about 2.5 or 3 and then change the blend mode to multiplication.


Quality of the image seems to be improving a lot and lot more details 
not visible in default setting of exposure seems to be coming up. 
Notably haziness of the image reduces dramatically.


Multiplication mode is listed under darken modes so it makes sense to 
increase the exposure before darkening to keep the brightness of image 
about same. But I'm not able to figure out why haziness of the image 
gets cleared up.



Any helpful hints will be really appreciated.


Regards,


Niranjan


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Re: [darktable-user] Where are the duplicate manager buttons described in the manual

[Niranjan Rao]

I have checked the diff of the pull request. New version makes it much 
easier to understand. Thank you.


I was confused where to rename and kept thinking that it's the number 
that can be renamed. After all that was the only name visible for the 
duplicate. Bottom area where text can be entered, did not look like 
editable area on my machine at all and never tried it. I kept trying to 
change the number part.


I don't know if these widgets allow placeholder like HTML widgets do. If 
they do, perhaps a placeholder like "Enter name here" will help a lot.


Thank you all for the help and pointers.

Niranjan

On 8/10/21 9:57 PM, Matt Maguire wrote:
thanks Terry, this wasn't obvious from the documentation, so I have 
created a PR to propose an update:
https://github.com/darktable-org/dtdocs/pull/333 
<https://github.com/darktable-org/dtdocs/pull/333>



On Wed, 11 Aug 2021 at 09:07, Terry Pinfold <mailto:tpinf...@gmail.com>> wrote:


I have just read the manual and it does mention the buttons at the
top right. The buttons are actually at the bottom. To rename a
duplicate just place the cursor in the box next to the duplicate
and give it a name. The process is very easy and straightforward.
The developers have done a great job with this module. If any
developers are reading this. It would be great to have the same
renaming capacity for snapshots.

image.png

On Wed, 11 Aug 2021 at 03:10, Niranjan Rao mailto:nhr...@gmail.com>> wrote:

So, is this a documentation bug? I knew about those buttons
and panel on left hand side. For me, most of the times
duplicates module is  collapsed. If you have lot of entries in
history panel, I have to scroll down to expand the duplicates
module and the buttons are at the bottom, so I was looking for
a shortcut. My interpretation was, there will be something on
top right either of the module or darkroom view, but these
buttons are at bottom.

Manual also mentions the duplicates can be renamed. I have not
figured out how to do it and I just get the entries 0 and 1
etc. Can it be done from darkroom duplicates view? If so, how?

Regards,

Niranjan

On 8/10/21 4:03 AM, Paul Marfell wrote:

In my darkroom layout the left hand panel is populated with
snapshots, history, duplicate manager, color picker, tagging,
image information, mask manager and export.

With duplicate manager open it displays a thumbnail of the
current image and under it 2 buttons "duplicate" and
"original". If I click duplicate it creates a new thumbnail
with the same edits as the first. If I click original it
creates a new image with only my "base" modules applied.

On Tue, 10 Aug 2021 at 06:51, Niranjan Rao mailto:nhr...@gmail.com>> wrote:

Greetings,

On 3.6, Ubuntu 20.04


I must be going blind or something. I could not find the
buttons as
described at

https://www.darktable.org/usermanual/3.6/en/module-reference/utility-modules/darkroom/duplicate-manager/

<https://www.darktable.org/usermanual/3.6/en/module-reference/utility-modules/darkroom/duplicate-manager/>


It says buttons on top-right and I don't see any buttons.
Trying to
figure out top right of what? Where it says
lighttable/darkroom etc or
top right of duplicate manager where reset instance etc
buttons are
typically shown.


In either case, I don't get any buttons anywhere. All I
want to do start
a new image without any changes or a virgin version as
manual describes it.


Regards,

Niranjan



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Re: [darktable-user] Where are the duplicate manager buttons described in the manual

[Niranjan Rao]

So, is this a documentation bug? I knew about those buttons and panel on 
left hand side. For me, most of the times duplicates module is  
collapsed. If you have lot of entries in history panel, I have to scroll 
down to expand the duplicates module and the buttons are at the bottom, 
so I was looking for a shortcut. My interpretation was, there will be 
something on top right either of the module or darkroom view, but these 
buttons are at bottom.


Manual also mentions the duplicates can be renamed. I have not figured 
out how to do it and I just get the entries 0 and 1 etc. Can it be done 
from darkroom duplicates view? If so, how?


Regards,

Niranjan

On 8/10/21 4:03 AM, Paul Marfell wrote:
In my darkroom layout the left hand panel is populated with snapshots, 
history, duplicate manager, color picker, tagging, image information, 
mask manager and export.


With duplicate manager open it displays a thumbnail of the current 
image and under it 2 buttons "duplicate" and "original". If I click 
duplicate it creates a new thumbnail with the same edits as the first. 
If I click original it creates a new image with only my "base" modules 
applied.


On Tue, 10 Aug 2021 at 06:51, Niranjan Rao <mailto:nhr...@gmail.com>> wrote:


Greetings,

On 3.6, Ubuntu 20.04


I must be going blind or something. I could not find the buttons as
described at

https://www.darktable.org/usermanual/3.6/en/module-reference/utility-modules/darkroom/duplicate-manager/

<https://www.darktable.org/usermanual/3.6/en/module-reference/utility-modules/darkroom/duplicate-manager/>


It says buttons on top-right and I don't see any buttons. Trying to
figure out top right of what? Where it says lighttable/darkroom
etc or
top right of duplicate manager where reset instance etc buttons are
typically shown.


In either case, I don't get any buttons anywhere. All I want to do
start
a new image without any changes or a virgin version as manual
describes it.


Regards,

Niranjan


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[darktable-user] Where are the duplicate manager buttons described in the manual

[Niranjan Rao]

Greetings,

On 3.6, Ubuntu 20.04


I must be going blind or something. I could not find the buttons as 
described at 
https://www.darktable.org/usermanual/3.6/en/module-reference/utility-modules/darkroom/duplicate-manager/



It says buttons on top-right and I don't see any buttons. Trying to 
figure out top right of what? Where it says lighttable/darkroom etc or 
top right of duplicate manager where reset instance etc buttons are 
typically shown.



In either case, I don't get any buttons anywhere. All I want to do start 
a new image without any changes or a virgin version as manual describes it.



Regards,

Niranjan


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Re: [darktable-user] Storage solutions

[Niranjan Rao]

Thank you. This helps a lot.

Regards,

Niranjan
On 7/25/21 8:37 PM, August Schwerdfeger wrote:
There is a script in Darktable's Lua repository, "Transfer Hierarchy," 
designed for the specific task of moving images between disks. It will 
automatically transfer images from one directory tree to another while 
preserving the existing directory hierarchy.


--
August Schwerdfeger
aug...@schwerdfeger.name 

On Sun, Jul 25, 2021 at 1:29 AM I. Ivanov > wrote:



> Is there a way to remap the image to new path? If not, how do you
> handle this kind of scenario? File is still available, but at a new
> path. Main storage does get full and because it's a laptop, I
can not
> connect another disk easily.
>
After you move the images to another location - right click on the
film
row or folder, select search and locate your images - the program
will
do the rest.

Also - if you work out of a shared disk (even an USB connected to a
router) DT does good work with the caching. It does fetch the raw
file
but after that works out from the cache quite a bit (just an idea).

Regards,

B


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[darktable-user] Add to library, select only new pictures question

[Niranjan Rao]

Greetings,


On darktable 3.6.0


It's not entirely clear to me when I select select only new pictures 
while importing pictures, how does darktable determines the new 
pictures? Is it new pictures for the destination folder/collection or 
does it look at complete database and see if the filename is duplicated.



While slightly slower to import, this might be nice feature to check 
across database either based on file name or md5 hash or something similar.



Regards,


Niranjan


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[darktable-user] Storage solutions

[Niranjan Rao]

Greetings,


Not a directly darktable question so to say, but relates to it and I'm 
sure many on this list have experienced similar issues.



As photo collection grows, so does disk usage to the point it becomes a 
critical issue. I have another storage disk connected to different PC 
where I keep moving the files as needed. However when the file is moved, 
images are naturally broken.



Is there a way to remap the image to new path? If not, how do you handle 
this kind of scenario? File is still available, but at a new path. Main 
storage does get full and because it's a laptop, I can not connect 
another disk easily.



If it matters, all machines are Ubuntu based.


Regards,


Niranjan


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Re: [darktable-user] Installing darktable on Ubuntu 18.04

[Niranjan Rao]

This is my work machine. There are multiple reasons why this machine can 
not upgraded yet. Like many other organizations, we have a plan to 
update many other servers and other desktops on 18.04. With luck might 
even finish it before 22.04 rolls out, at least we don't have 16.04 any 
more.


Home machine, I have no problem, but when I get some free time, I like 
to play with images at work also.

On 7/14/21 3:16 PM, Willy Williams wrote:


Niranjan,

    darktable 3.6 is available for Ubuntu 20.04, if you want to update 
your O/S.


Willy Williams

**

On 7/14/2021 at 18:04, Niranjan Rao wrote:

Greetings,


Site 
https://software.opensuse.org/download.html?project=graphics:darktable=darktable 
does not list 18.04. Is there any other way of installing version 3.6 
on Ubuntu 18.04?



Regards,


Niranjan

 


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[darktable-user] Installing darktable on Ubuntu 18.04

[Niranjan Rao]

Greetings,


Site 
https://software.opensuse.org/download.html?project=graphics:darktable=darktable 
does not list 18.04. Is there any other way of installing version 3.6 on 
Ubuntu 18.04?



Regards,


Niranjan


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Re: [darktable-user] Applying sidecars

[Niranjan Rao]

Hello,

Is there any way to run two instances of darktable. I have two monitors 
and its much easier for me to check the style in one instance as 
reference and experiment with other.


I can keep switching back and forth between images, but that's little 
cumbersome especially since film rolls are different. I tried firing 
another instance from terminal and specified different data directory, 
but it kept complaining about locks or sometimes just hangs


darktable --datadir /tmp/dt

Regards,

Niranjan

On 7/8/21 1:29 PM, KOVÁCS István wrote:

On Thu, 8 Jul 2021 at 20:52, Niranjan Rao  wrote:

darktable version 3.4.1

3.6 is now out, give it a spin if you can!


I'm struggling with applying the sidecars - xmp files.

Guillermo has already answered that, but there's a non-trivial feature
(documented, but not realised by many): darktable, by default, saves
the history stack into the exported JPG, and it can actually load the
history stack from such a JPG. The procedure is the same as with the
XMP, but you need to change the selector in the Open dialogue from
*.xmp to 'All files', and select the JPG file.
Also, if you're after a 'look', if perfectly fine to apply any history
stack to any image, even if it's a different camera -- just reset the
input colour profile to use the values for your camera.

Kofa

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Re: [darktable-user] Applying sidecars

[Niranjan Rao]

On 7/8/21 1:29 PM, KOVÁCS István wrote:

On Thu, 8 Jul 2021 at 20:52, Niranjan Rao  wrote:

darktable version 3.4.1

3.6 is now out, give it a spin if you can!


I'm struggling with applying the sidecars - xmp files.

Guillermo has already answered that, but there's a non-trivial feature
(documented, but not realised by many): darktable, by default, saves
the history stack into the exported JPG, and it can actually load the
history stack from such a JPG. The procedure is the same as with the
XMP, but you need to change the selector in the Open dialogue from
*.xmp to 'All files', and select the JPG file.
Also, if you're after a 'look', if perfectly fine to apply any history
stack to any image, even if it's a different camera -- just reset the
input colour profile to use the values for your camera.

Kofa

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Updating to 3.6 is my planned weekend task.

I did apply some xmp files accidentally on images and I got 
warning/error from darktable -  history stack corrupted or or something 
similar. It was an operator error - choosing wrong style for wrong image 
- most probably difference was one was dng file and other jpg file.


It took couple of tries until results of downloaded file and xmp files 
matched with what I was seeing on the pixls.us. Now I have a long task 
of learning how each module affected and what changed and then play with 
my images to see if I can improve it.


The tool - darktable is excellent and my goal is to learn. pixls.us is 
phenomenal - really helpful to novices like me. I've seen almost all 
videos by Bruce Williams and learned a lot - but because darktable 
offers so much rich functionality, it can be overwhelming and confusing 
- when to use what.


I'm literally going xmp by xmp, studying the changes between each 
history item, how masks were applied and so on.


Thanks for the help and pointers.

Regards,

Niranjan

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Re: [darktable-user] Applying sidecars

[Niranjan Rao]

Hi Guillermo,

Thank you, this sounds like what I was looking for. I searched xmp on 
the manual web site and it looks like it does not return history stack 
section. May be my search terms were wrong.


Regards,

Niranjan

Regards,

Niranjan

On 7/8/21 12:04 PM, Guillermo Rozas wrote:

Hi Niranjan,

what you want is the "load sidecar file" option on 
lighttable's "history stack" module: 
https://www.darktable.org/usermanual/en/module-reference/utility-modules/lighttable/history-stack/ 
<https://www.darktable.org/usermanual/en/module-reference/utility-modules/lighttable/history-stack/>


Regards,
Guillermo

On Thu, Jul 8, 2021 at 3:52 PM Niranjan Rao <mailto:nhr...@gmail.com>> wrote:


Greetings,


darktable version 3.4.1


I came across this
(https://discuss.pixls.us/c/processing/playraw/30
<https://discuss.pixls.us/c/processing/playraw/30>)
wonderful section on pixls.us <http://pixls.us> where images can
be uploaded and very
helpful community shows the magic of opensource tools by processing
images. This is very valuable tool in my opinion as you can see the
changes and magic. I am learning a lot by downloading the images
and xmp
files and studying the effects.


I'm struggling with applying the sidecars - xmp files. I tried
looking
at the manual and section

https://www.darktable.org/usermanual/en/overview/sidecar-files/sidecar-import/

<https://www.darktable.org/usermanual/en/overview/sidecar-files/sidecar-import/>

seems to be most relevant. The problem I face is when I download the
image and corresponding xmp files, everyone names it differently
based
on their choice or completely inverse scenario where file is named as
exactly same by many. I have to remember to name it correctly and
save
it in right directory. Default browser saving format is also not very
friendly to darktable sidecar reading logic.


Is there a feature in darktable where I can just say, take this
xmp file
and apply it to the current image? I think this is similar to
creating
style from history stack, but source will be xmp file but could not
easily figure it out.


Regards,


Niranjan


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[darktable-user] Applying sidecars

[Niranjan Rao]

Greetings,


darktable version 3.4.1


I came across this (https://discuss.pixls.us/c/processing/playraw/30) 
wonderful section on pixls.us where images can be uploaded and very 
helpful community shows the magic of opensource tools by processing 
images. This is very valuable tool in my opinion as you can see the 
changes and magic. I am learning a lot by downloading the images and xmp 
files and studying the effects.



I'm struggling with applying the sidecars - xmp files. I tried looking 
at the manual and section 
https://www.darktable.org/usermanual/en/overview/sidecar-files/sidecar-import/ 
seems to be most relevant. The problem I face is when I download the 
image and corresponding xmp files, everyone names it differently based 
on their choice or completely inverse scenario where file is named as 
exactly same by many. I have to remember to name it correctly and save 
it in right directory. Default browser saving format is also not very 
friendly to darktable sidecar reading logic.



Is there a feature in darktable where I can just say, take this xmp file 
and apply it to the current image? I think this is similar to creating 
style from history stack, but source will be xmp file but could not 
easily figure it out.



Regards,


Niranjan


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[darktable-user] Dark photos when printed

[Niranjan Rao]

Greetings,

darktable 2.4.1, Ubuntu 20.04


I am just a beginner and first time I tried printing some of photos I 
had. Commercial service from typical drug store on the corner where you 
can upload photos for printing was used. No calibration of my monitor or 
anything except tinkering with few styles until preview and exported 
image was acceptable.



After printing, photos look little dark - not too dark, but not as 
bright as they show up on my monitor.  Most of the photos were captured 
on sunny day outside.



I am trying to learn why this can be happening. It could be my laptop 
monitor which is showing brighter than it should be or printing service 
could be processing uploaded jpeg image.



Any thoughts or hints? Should I be tinkering with any other settings 
such as color profiles so that photos don't look dark.



Regards,


Niranjan


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Re: [darktable-user] Not seeing replies to my posts

[Niranjan Rao]

On 2/22/21 10:39 AM, Bill Martz wrote:
This has been going on for quite a while, and fortunately I have 
gotten answers anyway:


When I send an email to the users list, the only replies I see are 
when someone replies to someone else's initial reply to my post. For 
example,


Patrick Shanahan apparently replied to my post, Open/Close Behavior of 
darkroom Left Hand Modules, but I didn't receive it. When Juan Navarro 
replied to Patrick's reply, I received that.


I see replies by Patrick to other people's posts all the time, so I 
don't understand why it doesn't work for me. As far as I can tell, I 
am seeing everyone else's posts and all the replies to them.


Is anyone able to give me a fix for this issue?

Bill Martz

P.S. If you would include this address in your reply, I hope to be 
able to see it:


bill.in.michi...@gmail.com 

 
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Are you using thunderbird by any chance? I have seen similar behavior 
when using thunderbird and mailing lists. My postings do not show up in 
the list, but responses do.




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[darktable-user] Film strip in maps view

[Niranjan Rao]

Greetings,


On darktable 3.4.1


This could be operator error or an intentional feature or a bug. I could 
not determine either way and looking for help. I tried reading 
documentation about film strip at 
https://www.darktable.org/usermanual/en/module-reference/utility-modules/shared/filmstrip/ 
and that did not help me much, especially when it comes to map view.



Film strip seems to be using ctrl-click to select/unselect images. Just 
clicking on a image is not selecting it. This behavior is different than 
similar view, that is lighttable. Reading the manual told me to 
ctrl-shift-a to reset the selecton, but should it reset when you just 
click on the image?



I am trying to drag images to desired location by selecting all the 
images and then tagging a set of images. I have to reset my selections 
frequently for right tags for the images and it becomes interesting 
exercise as behavior is different than lighttable view. In lighttable 
view, clicking on the image resets selection, you can use ctrl click to 
select/unselect image and shift-click allows you to select range of 
images. Same combination does not seem to be working in film strip.



This could be a bug or intentionally build this way and I am trying to 
understand the behavior and avoid goofs I am making.



Regards,


Niranjan


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Re: [darktable-user] Best way to tag image from command line?

[Niranjan Rao]

On 1/18/21 2:03 PM, Pascal Obry wrote:

Le lundi 18 janvier 2021 à 13:53 -0800, Niranjan Rao a écrit :

I wouldn't want to comment on other's experience. Here is what I was
looking for and so far I have not found a way to do in darktable. Any
tips/hints welcome.

I was looking for portrait images. I could not find a way to do it in
UI. Darktable is aware of image orientation, but it's not accessible
in
UI as far as I know.

You already got an answer. This is available and is called aspect
ratio. In dt 3.6 there will be even some presets. So before asking for
SQL in dt (which will certainly never happen) please read the doc and
also the reply already done on this thread.


Thanks,


Pascal,

You are one of the developer of the darktable and I respect you for the 
work you have done. Since i am not a contributing member right now, all 
I can do is propose the ideas. I have read manual many times and when 
not clear I have asked the questions and got excellent support from 
community. I was just looking for a way extending already excellent tool 
and discussing the ideas.


If you don't think feature is not worthy of implementation, we can drop 
the topic, no worries, but language like "certainly never happen" feels 
like not considering other ideas without full consideration or reasoning 
behind it.



After I refresh my C/C++ skills, skills used long time back, I might 
create a pull request with my ideas for your consideration, my idea of 
what can be done. You don't have to accept the pull request, but it will 
give me some satisfaction of taking some action and not just talking.


Thank you for the hard work and a excellent product.


Regards,

Niranjan

Niranjan


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Re: [darktable-user] Best way to tag image from command line?

[Niranjan Rao]

I wouldn't want to comment on other's experience. Here is what I was 
looking for and so far I have not found a way to do in darktable. Any 
tips/hints welcome.


I was looking for portrait images. I could not find a way to do it in 
UI. Darktable is aware of image orientation, but it's not accessible in 
UI as far as I know. Besides it uses different values than standard exif 
values, but comments in the code make it clear why it was done that way 
and makes sense.


If I had access to query editor, I could have easily have a query and 
don't have to wait for a feature that may or may not be implemented.


I'm trying to understand resistance to SQL query - as I see it,  it's a 
view after all, it has list of images and should not care how it got the 
list of images. As far as i can see current view is basically result of 
SQL, either based on film role or tags or whatever. If you provide 
opportunity people will use it in imaginative way, after all this tool 
is used by many imaginative artists. Why constrain within the confounds 
of UI?


I agree that SQL is not for everyone, but that does not mean other 
developers can provide SQL that can do allow people to filter the way 
they want or enhance functionality of already excellent tool. Not 
everyone is able to contribute with C/C++ tools, but following linux 
philosophy, any tool should be easily extendible by others without 
significant changes in the original tool.


Thanks,

Niranjan

On 1/18/21 11:39 AM, KOVÁCS István wrote:

All this SQL magic makes sense only if the database actually stores
those fields. Are you sure they're there? Wouldn't it be better to ask
for new fields to be added, and then handled through the UI filter
builder? What feature are you missing from the query builder itself?
Because if none, then there's no need for direct SQL filtering. The
few power users who want to have advanced statistics or such from
their database can use the command-line SQLite client and run whatever
query they want.

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Re: [darktable-user] Best way to tag image from command line?

[Niranjan Rao]

I respectfully disagree with SQL injection aspect. I'm aware of SQL 
injection and damages it can cause. Problem can be addressed in multiple 
ways.


 * darktable is single user database - that is data belongs to only one
   user. There is no data leak across multiple users of the application.
 * Damaging database such as dropping/deleting rows/tables is certainly
   possible, but it can be managed by read-only transactions or similar
   techniques.

I agree that SQL is not everyone's cup of tea or other preferred 
beverage. That's why I said others can help forming the SQL. Essentially 
goal is to come up with a result set of images that can be shown in 
lighttable view. One way is to write the SQL that returns a list of 
images based on given criteria. lighttable is essentially doing it after 
removing the GUI sugar. If a custom SQL can return image list, lot of 
problems can be easily solved - e.g. FAQ can maintain a list of approved 
SQL queries that can show the results.



Regards,


Niranjan

On 1/17/21 10:10 PM, Remco Viëtor wrote:

On lundi 18 janvier 2021 04:45:04 CET Niranjan Rao wrote:

Thank you, but I was thinking darktable allowing to select a list of
images based on SQL.


Perhaps look up "SQL injection"?

Apart from that, SQL isn't all that simple to use, a few of the concepts are
not self-evident.



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[darktable-user] Usage and modifying description/title metadata fields

[Niranjan Rao]

Ubuntu 20.04, darktable 2.4.1


Apologies if this sounds really dumb question, but I am trying to figure 
out what's the usage of fields like description/title. I could not 
figure out a way to edit these fields from darkroom view, but lightroom 
allows me to set the values.



If you set title and/or description, are there any other tools - may be 
like web browser or file explorer like tools that can show the 
information on mouse hover or something. I think it will really neat if 
functionality already exists.


At least on Ubuntu, I did not see title/description displayed in default 
image viewer or image properties even though it shows other information.


Regards,


Niranjan


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Re: [darktable-user] Best way to tag image from command line?

[Niranjan Rao]

It looks darktable does support most of these under collect images 
module. Some like City/State etc can be easily implemented.


I think easiest way for developers might be to provide a raw SQL 
functionality. This way people can help each other with queries and 
extend the search functionality.


Regards,

Niranjan
On 1/17/21 5:10 PM, Terry Pinfold wrote:


Screen grab from Lightrooms metadata search function.

Lightroom have developed a nice Digital Asset management tool but they 
want you to pay a subscription for the rest of your life. The only 
subscription I like is Netflix.


Dr Terry Pinfold
Cytometry & Histology Lab Manager
Lecturer in Flow Cytometry
University of Tasmania
17 Liverpool St, Hobart, 7000
Ph 6226 4846 or 0408 699053

*From:* Niranjan Rao 
*Sent:* Monday, 18 January 2021 6:01 AM
*To:* Terry Pinfold ; KOVÁCS István 


*Cc:* Darktable Users List 
*Subject:* Re: [darktable-user] Best way to tag image from command line?
I have never used lightroom hence the question.

Which exact search features are missing from darktable? I find collect 
images module more than sufficient where you can manipulate various 
and/or conditions to search/filter images.


With image data in proper SQL database, searching images should be 
relatively easy to handle and darktable already allows many of the 
searches. If there is data in database, it can be queried, if it's not 
there, we can log feature requests for better cataloging.


Personally, I believe collect images module is least noticed module 
and many don't see other features like tag hierarchy etc available. I 
myself was unaware and started writing my own code until someone 
kindly pointed existing features and told me how to use it.


I did face a challenge of collecting the images in portrait mode, but 
quick look at database and help from others got me on the track. I 
believe data is there, but priorities are on improving images, not on 
searching images which can be achieved by external tools. Only gotcha 
here is may be darktable needs to be publish official schema or API so 
that other tools can use it.


Regards,

Niranjan

On 1/16/21 12:28 PM, Terry Pinfold wrote:

Hi Kofa,
      I am using windows 10 with V3.4 and do not see any of the 
mentioned presets in lighttable. It is not a big issue to me but one 
of the advantages of Lightroom is its ability to search images based 
on text or extensive metadata including camera, lens, ISO etc. The 
editing capabilities of Darktable is more important to me than the 
digital asset management tools, but I guess it would be nice to have 
both.




*From:* KOVÁCS István  
<mailto:k...@kovacs-telekes.org>

*Sent:* Saturday, 16 January 2021 7:32 PM
*To:* Niranjan Rao  <mailto:nhr...@gmail.com>
*Cc:* Darktable Users List  
<mailto:darktable-user@lists.darktable.org>'m

*Subject:* Re: [darktable-user] Best way to tag image from command line?
You may not need to tag them. Try this:
On the lighttable, using the 'collect images' module => 'hamburger'
(presets) menu -> portrait, landscape, or square. Those are just
predefined filters using metadata -> capture details -> aspect ratio
(less than, greater than or equal to 1). I'm on the master branch, but
I think this is available with 3.4 as well.

Kofa

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University of Tasmania Electronic Communications Policy (December, 
2014).
This email is confidential, and is for the intended recipient only. 
Access, disclosure, copying, distribution, or reliance on any of it 
by anyone outside the intended recipient organisation is prohibited 
and may be a criminal offence. Please delete if obtained in error and 
email confirmation to the sender. The views expressed in this email 
are not necessarily the views of the University of Tasmania, unless 
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Re: [darktable-user] Best way to tag image from command line?

[Niranjan Rao]

I have never used lightroom hence the question.

Which exact search features are missing from darktable? I find collect 
images module more than sufficient where you can manipulate various 
and/or conditions to search/filter images.


With image data in proper SQL database, searching images should be 
relatively easy to handle and darktable already allows many of the 
searches. If there is data in database, it can be queried, if it's not 
there, we can log feature requests for better cataloging.


Personally, I believe collect images module is least noticed module and 
many don't see other features like tag hierarchy etc available. I myself 
was unaware and started writing my own code until someone kindly pointed 
existing features and told me how to use it.


I did face a challenge of collecting the images in portrait mode, but 
quick look at database and help from others got me on the track. I 
believe data is there, but priorities are on improving images, not on 
searching images which can be achieved by external tools. Only gotcha 
here is may be darktable needs to be publish official schema or API so 
that other tools can use it.


Regards,

Niranjan

On 1/16/21 12:28 PM, Terry Pinfold wrote:

Hi Kofa,
      I am using windows 10 with V3.4 and do not see any of the 
mentioned presets in lighttable. It is not a big issue to me but one 
of the advantages of Lightroom is its ability to search images based 
on text or extensive metadata including camera, lens, ISO etc. The 
editing capabilities of Darktable is more important to me than the 
digital asset management tools, but I guess it would be nice to have 
both.




*From:* KOVÁCS István 
*Sent:* Saturday, 16 January 2021 7:32 PM
*To:* Niranjan Rao 
*Cc:* Darktable Users List 'm
*Subject:* Re: [darktable-user] Best way to tag image from command line?
You may not need to tag them. Try this:
On the lighttable, using the 'collect images' module => 'hamburger'
(presets) menu -> portrait, landscape, or square. Those are just
predefined filters using metadata -> capture details -> aspect ratio
(less than, greater than or equal to 1). I'm on the master branch, but
I think this is available with 3.4 as well.

Kofa

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University of Tasmania Electronic Communications Policy (December, 2014).
This email is confidential, and is for the intended recipient only. 
Access, disclosure, copying, distribution, or reliance on any of it by 
anyone outside the intended recipient organisation is prohibited and 
may be a criminal offence. Please delete if obtained in error and 
email confirmation to the sender. The views expressed in this email 
are not necessarily the views of the University of Tasmania, unless 
clearly intended otherwise.






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[darktable-user] Best way to tag image from command line?

[Niranjan Rao]

Greetings,

On Ubuntu 20.04, darktable 2.4.0


Generic question is can I tag the image from command line? Obvious 
search engine searches have failed so far. I suspect lua script can do 
it, but have not managed to put two and two together. I saw some mention 
at https://www.darktable.org/lua-api/index.html#darktable_tags. If 
someone can kindly provide example, I can add loop around the file list 
very easily.



Specifically, I was looking for best way to find images in portrait mode 
- or in general, any image that is not in landscape mode. I have the 
complete image paths - built from querying darktable database and using 
exiftool to crosscheck my results.



I have almost 1000 entries that I would like to be tagged.

Regards,


Niranjan



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Re: [darktable-user] why is this mailing list so slow?

[Niranjan Rao]

On 1/3/21 9:56 AM, Germano Massullo wrote:

Il 03/01/21 18:35, Jason Polak ha scritto:

I still use a few mailing lists and they all seem more or less the same
with regard to speed. Seems plenty fast for a mailing list.

Jason

On 2021-01-03 4:14 a.m., Bernhard wrote:

Hi,

I find messages to this mailing list sometimes beeing delayed up to 1h
(most of the cases up to 1/2h) when sending them compared to what I see
in my inbox.
Does anyone have a clou about this?

Yo, guys you are replying under my topic "[darktable-user] Increase
lighttable performance"

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And here I was blaming my thunderbird and everyone else in the world 
about mixing the threads. Glad to know someone else also noticed it. 
Some headers must have mixed up.



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[darktable-user] Finding out images based on orientation

[Niranjan Rao]

New years greetings


On 3.4.0


Wondering if there is a way to see images in landscape or portrait mode. 
I looked at "Collect images" module and metadata but did not see 
anything obvious.



Is there a way to filter the images based on the orientation?


darktable certainly has information and a quick check in database shows 
orientation column. Not sure if it is exposed in the UI in collect 
images module.



Sideline question:

I see large number of images have orientation with value 0 and few with 
values 5 and 6. Anyone quickly knows what these values stand for?



Regards,


Niranjan


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Re: [darktable-user] Refresh exif information

[Niranjan Rao]

Hi Bill,

Thank you for the information, but my problem is two fold. I want to use 
GPS information on the backup sites I use. As far as I know, darktable 
will not touch raw image and I have to embed the information in the 
image itself for the online sites to work.


My usecase is as follows:

I copied bunch of raw images from my camera card. Asked darktable to 
process it, uploaded my raw backups in my cloud. If I setup my GPS 
ordinates in darktable, my cloud does not show it as image does not have 
it. This is the problem I was trying to solve.


Regards,

Niranjan
On 12/26/20 2:01 PM, William Ferguson wrote:

You can also copy and paste GPS info from the metadata panel.

There is also a new geoToolbox lua script coming that can help with 
applying GPS information to images that don't have it including 
interpolating between 2 points, so if you shot image A at one location 
and image B at another you could assign all the images between A and B 
with interpolated GPS coordinates based on the time difference and 
change in coordinates.


Bill

On Sat, Dec 26, 2020 at 10:13 AM Niranjan Rao <mailto:nhr...@gmail.com>> wrote:


Thank you, this works. met

Regards,

Niranjan

On 12/25/20 11:35 PM, Andreas Herold wrote:
> Hi Niranjan,
>
> try „right pane“ -> „selected image[s]“ -> Tab „metadata“ ->
„refresh exif“
>
> Best regards
> Andreas
>
>> Am 26.12.2020 um 07:46 schrieb Niranjan Rao mailto:nhr...@gmail.com>>:
>>
>> On darktable 3.2.1
>>
>>
>> I use exiftool to update images to add geo tagging information.
My camera does not have GPS nor do I have easy access to such
tools. I don't need exact coordinates, but information like it was
this park or general location is good enough for me. I use google
maps to copy location ordinates and embed it in my images. I need
information in the images as many online tools show me the
location based on the geo information where my backups are.
>>
>>
>> However, I need to see the images first to decide which photo
was captured where and I use lighttable view to decide the files.
>>
>>
>> As far as I know, darktable never updates the original. The
files are already imported. Is there any easy way to re-read the
location information from images again? Sometimes it takes lot of
time to reimport the images again.
>>
>>
>> Regards,
>>
>>
>> Niranjan
>>
>>

>> darktable user mailing list
>> to unsubscribe send a mail to
darktable-user+unsubscr...@lists.darktable.org
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>>


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Re: [darktable-user] Cant find my config files for Darktable

[Niranjan Rao]

I posted the question about exact same issue twelve hours back. I did 
know where the config file resides but did could not figure out how to 
change CSS. It looks like you have figured it out.


I see you got other replies about location of config file. I have master 
copy in /usr/share/darktable/themes/ directory. However I was trying to 
use darktable settings UI to tinker with CSS rather than copying whole 
file. I could not make it work.


Regards,

Niranjan
On 12/26/20 2:16 AM, Andrew Greig wrote:

Hi All,

Running Ubuntu 18.04 LTS system is up to date, DT 3.2.1 it is working 
fine but I cannot find the config files. I would like to put a red 
border around the selected thumbnails in LightTable, because the 
default is not easy to distinguish between selected and not-selected.


I found no config files among the Hidden Files in my Home dir, nothing 
in /usr/local and the daktable.rc file makes no mention of the 
background color of the thumbnails.


Where else could the config files be lurking, please?

Andrew Greig

Melbourne Australia



 


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Re: [darktable-user] Refresh exif information

[Niranjan Rao]

Thank you, this works.

Regards,

Niranjan

On 12/25/20 11:35 PM, Andreas Herold wrote:

Hi Niranjan,

try „right pane“ -> „selected image[s]“ -> Tab „metadata“ -> „refresh exif“

Best regards
Andreas


Am 26.12.2020 um 07:46 schrieb Niranjan Rao :

On darktable 3.2.1


I use exiftool to update images to add geo tagging information. My camera does 
not have GPS nor do I have easy access to such tools. I don't need exact 
coordinates, but information like it was this park or general location is good 
enough for me. I use google maps to copy location ordinates and embed it in my 
images. I need information in the images as many online tools show me the 
location based on the geo information where my backups are.


However, I need to see the images first to decide which photo was captured 
where and I use lighttable view to decide the files.


As far as I know, darktable never updates the original. The files are already 
imported. Is there any easy way to re-read the location information from images 
again? Sometimes it takes lot of time to reimport the images again.


Regards,


Niranjan


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[darktable-user] Refresh exif information

[Niranjan Rao]

On darktable 3.2.1


I use exiftool to update images to add geo tagging information. My 
camera does not have GPS nor do I have easy access to such tools. I 
don't need exact coordinates, but information like it was this park or 
general location is good enough for me. I use google maps to copy 
location ordinates and embed it in my images. I need information in the 
images as many online tools show me the location based on the geo 
information where my backups are.



However, I need to see the images first to decide which photo was 
captured where and I use lighttable view to decide the files.



As far as I know, darktable never updates the original. The files are 
already imported. Is there any easy way to re-read the location 
information from images again? Sometimes it takes lot of time to 
reimport the images again.



Regards,


Niranjan


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[darktable-user] Changing the border of the selection in lighttable

[Niranjan Rao]

On darktable 3.2.1


In the lighttable mode, is it possible to change the border color of 
selected items? Color difference in selected and unselected items is 
very subtle in default darktable theme and depending upon my laptop's 
monitor angle, sometimes there is no difference at all.



I suspect it's the following value as defined in css file. However 
overriding the value in Settings/CSS tweaks does not work. I have not 
tried restarting the darktable to see if it works.


@define-color thumbnail_selected_bg_color @grey_60;


Can someone provide me an example of what needs to be put in 
Settings/CSS tweaks section to show my selections more prominently?



I have tried following

@define-color thumbnail_selected_bg_color white

@define-color thumbnail_selected_bg_color #FF


Regards,


Niranjan


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Re: [darktable-user] What happened here?

[Niranjan Rao]

This helped me, I honestly don't know how my export settings changed. I 
have not changed my export settings, at least knowingly.


Also wondering why only certain pictures got affected, nevertheless, 
issue with this picture is solved and I know little more than I 
previously knew about darkatable.



Thank you,

Niranjan
On 12/24/20 12:33 PM, KOVÁCS István wrote:

Hi,

On Thu, 24 Dec 2020 at 18:55, Niranjan Rao  wrote:


Exported image is dark. It looks like darktable preview is not matching
with exported image. What happened here?

Check the export settings (lighttable, between the 'export selected'
heading and the 'export' button) - does it apply any style that could
alter your image?

Kofa

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[darktable-user] What happened here?

[Niranjan Rao]

Greetings,


On Ubuntu 20.04, darktable 3.2.1


Images are available at the following link. One is screenshot of what 
darktable is showing me and other one is result of same image exported. 
Exported image is dark. It looks like darktable preview is not matching 
with exported image. What happened here?


https://photos.app.goo.gl/ePfjt1r8Ld9zpFBn8


Regards,


Niranjan


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[darktable-user] Export to website gallery and related questions

[Niranjan Rao]

On darktable 3.2.1 / Ubuntu 20.04


I played with "export to website gallery" feature. Before I start 
tinkering around, I want to make sure these features already don't exist 
when exporting in gallery format.



It does export, creates a presentation that is acceptable for my 
personal use, but I would like to get some more image data when image is 
exported. For me, generated html file does not show file name, even 
though it's obviously using the images in html. Standard information 
that gets displayed  in "Image information" of lighttable view along 
with tags should be good.



If this is not available, is there any way to ask darktable to generate 
this information while exporting in some sort programming friendly 
format? Since the generated html already has json structure, I'm 
assuming this feature exists somewhere.



I know about command line tool darktable-cli. Can I ask it to export 
image thumb and main image on the same line as export to web gallery does?



Ultimate goal is to create enough data (image, thumbnail, image data, 
tags etc) so that any gallery software can be easily adapted. I want to 
generate a tag cloud too. If no such features exist, I have enough 
skills to play with database and generate the information, but I would 
rather not do it if official way exists as it will be using unofficial 
information and will be subject to breakage.



Thanks,


Niranjan




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[darktable-user] Snapshots question

[Niranjan Rao]

Darktable 3.0.2, Ubuntu 18.04


This question is probably ridicule worthy, but I am really facing 
challenges many times. Official manual at 
https://www.darktable.org/usermanual/en/snapshots.html states that 
snapshot is on left and right side current image.



I have seen this reversing many times and could not figure out. As a 
matter fact currently, I have active image on left side and snapshot on 
right hand side.



On my other computer, I have seen it appearing randomly at left or right 
and have got completely confused.



Am I missing something or making a stupid mistake? To me current image 
is whatever selected from history stack. I have seen it many times 
getting reversed. Is there a key/mouse combination that changes left/right?



Thank you,


Niranjan


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Re: [darktable-user] Comet NEOWISE

[Niranjan Rao]

Thank you. I have lot of homework to do.

Regards,

Niranjan
On 7/15/20 5:02 AM, Willy Williams wrote:


Niranjan, here are a few links you might want to look at:

  * 
https://wtop.com/gallery/the-space-place/photos-passing-comet-is-visible-at-shenandoah/

  * 
https://petapixel.com/2017/04/07/npf-rule-formula-sharp-star-photos-every-time/
(The NPF rule will give you sharper images than the Rule of 500)
  * 
http://www.sahavre.fr/tutoriels/astrophoto/34-regle-npf-temps-de-pose-pour-eviter-le-file-d-etoiles#Top
(Good, if you speak French)
  * 
https://www.nationalparksatnight.com/blog/2019/4/13/new-rule-for-shooting-the-sharpest-stars-in-the-sky

That should get you on the right track.  Also recommend that you get 
four apps for your phone:


  * PhotoPills (https://www.photopills.com/) Once you have it loaded,
go to the "Spot Stars" icon. You'll find a very handy NPF Rule
calculator that you will need to customize for your camera and lens.
  * The Photographer's Ephemeris (https://www.photoephemeris.com/)
  * Stellarium Plus
(https://www.stellarium-labs.com/stellarium-mobile-plus/) This is
the only sky view app that shows where to look for NEOWISE.
  * SkyView (https://skyview-free.en.uptodown.com/android)

Willy

**

On 7/14/2020 at 20:11, Niranjan Rao wrote:

Greetings,


Firstly - this has nothing to do with darktable. My apologies for 
being off topic. From my point of view, there are lot of experts here 
who can help to improve photo quality. If you think it's 
inappropriate, please feel free to delete.



Comet NEOWISE is going to be visible for next few days. I have been 
seeing some stunning photos, some of them on mobile phones. I'm that 
person who is often wrong in camera settings and trying to learn from 
internet resources. I don't have fancy camera or lenses, but my hopes 
were raised after seeing mobile photos from Samsung devices. I should 
also mention, after spending a year just to be safe, I have finally 
stopped shooting jpeg+raw to just raw as photos seem to be more 
recognizable these days and my knowledge of darkatable and post 
processing is increasing.



Are there any tips experts willing to share for taking picture of 
comet. I have a tripod and and assumption that weather will 
cooperate. I know about and aperture and shutter priority modes, but 
do often get confused which one to use. As most of the videos and 
sites say, I'll be using aperture priority.



Thanks in advance.


Niranjan



 


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Re: [darktable-user] Comet NEOWISE

[Niranjan Rao]

I have Canon sx60hs. It doesn't have detachable lens.

I am in completely urban environment. Because of weather, ambient light 
and buildings in between, I was not able to see the comet yet.


Planning to make a trip litter further where there should be little more 
dark and hopefully better weather.



Thanks,

Niranjan
On 7/15/20 12:13 AM, Stille wrote:
Agreed with the manual exposure. If you tell us what lenses you have 
and what your observation location is like (city, rural, middle of 
nowhere etc) I can suggest some settings.


On 7/15/20 3:55 AM, Niranjan Rao wrote:

Hi Terry,

Thank you. Looks like I need to do some more RTFM and tinker with the 
dials. So far my range was aperture and shutter priority. I know 
camera has manual settings, but not advanced enough and/or never 
tried it.


Regards,

Niranjan


On 7/14/20 5:45 PM, Terry Pinfold wrote:

Hi Niranjan,
        I would suggest not using aperture priority. Instead use 
manual exposure. I would suggest a lens wide open to get as much 
light as possible. Probably about 20 second exposure to avoid 
movement of the comet but still getting lots of light into the 
camera. Then experiment with ISO. Probably starting at 3200


Aperture priority will get confused with the dark sky and would 
likely overexpose the comet.


Sadly I am in Australia and can not see this comet. Maybe in another 
life in 6800 years.


cheers

On Wed, 15 Jul 2020 at 10:12, Niranjan Rao <mailto:nhr...@gmail.com>> wrote:


Greetings,


Firstly - this has nothing to do with darktable. My apologies
for being
off topic. From my point of view, there are lot of experts here
who can
help to improve photo quality. If you think it's inappropriate,
please
feel free to delete.


Comet NEOWISE is going to be visible for next few days. I have been
seeing some stunning photos, some of them on mobile phones. I'm
that
person who is often wrong in camera settings and trying to learn
from
internet resources. I don't have fancy camera or lenses, but my
hopes
were raised after seeing mobile photos from Samsung devices. I
should
also mention, after spending a year just to be safe, I have finally
stopped shooting jpeg+raw to just raw as photos seem to be more
recognizable these days and my knowledge of darkatable and post
processing is increasing.


Are there any tips experts willing to share for taking picture
of comet.
I have a tripod and and assumption that weather will cooperate.
I know
about and aperture and shutter priority modes, but do often get
confused
which one to use. As most of the videos and sites say, I'll be
using
aperture priority.


Thanks in advance.


Niranjan




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--
Dr Terry Pinfold
Cytometry & Histology Lab Manager
Lecturer in Flow Cytometry
University of Tasmania
17 Liverpool St, Hobart, 7000
Ph 6226 4846 or 0408 699053




 
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Re: [darktable-user] Comet NEOWISE

[Niranjan Rao]

Hi Terry,

Thank you. Looks like I need to do some more RTFM and tinker with the 
dials. So far my range was aperture and shutter priority. I know camera 
has manual settings, but not advanced enough and/or never tried it.


Regards,

Niranjan


On 7/14/20 5:45 PM, Terry Pinfold wrote:

Hi Niranjan,
        I would suggest not using aperture priority. Instead use 
manual exposure. I would suggest a lens wide open to get as much light 
as possible. Probably about 20 second exposure to avoid movement of 
the comet but still getting lots of light into the camera. Then 
experiment with ISO. Probably starting at 3200


Aperture priority will get confused with the dark sky and would likely 
overexpose the comet.


Sadly I am in Australia and can not see this comet. Maybe in another 
life in 6800 years.


cheers

On Wed, 15 Jul 2020 at 10:12, Niranjan Rao <mailto:nhr...@gmail.com>> wrote:


Greetings,


Firstly - this has nothing to do with darktable. My apologies for
being
off topic. From my point of view, there are lot of experts here
who can
help to improve photo quality. If you think it's inappropriate,
please
feel free to delete.


Comet NEOWISE is going to be visible for next few days. I have been
seeing some stunning photos, some of them on mobile phones. I'm that
person who is often wrong in camera settings and trying to learn from
internet resources. I don't have fancy camera or lenses, but my hopes
were raised after seeing mobile photos from Samsung devices. I should
also mention, after spending a year just to be safe, I have finally
stopped shooting jpeg+raw to just raw as photos seem to be more
recognizable these days and my knowledge of darkatable and post
processing is increasing.


Are there any tips experts willing to share for taking picture of
comet.
I have a tripod and and assumption that weather will cooperate. I
know
about and aperture and shutter priority modes, but do often get
confused
which one to use. As most of the videos and sites say, I'll be using
aperture priority.


Thanks in advance.


Niranjan




darktable user mailing list
to unsubscribe send a mail to
darktable-user+unsubscr...@lists.darktable.org
<mailto:darktable-user%2bunsubscr...@lists.darktable.org>



--
Dr Terry Pinfold
Cytometry & Histology Lab Manager
Lecturer in Flow Cytometry
University of Tasmania
17 Liverpool St, Hobart, 7000
Ph 6226 4846 or 0408 699053





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[darktable-user] Comet NEOWISE

[Niranjan Rao]

Greetings,


Firstly - this has nothing to do with darktable. My apologies for being 
off topic. From my point of view, there are lot of experts here who can 
help to improve photo quality. If you think it's inappropriate, please 
feel free to delete.



Comet NEOWISE is going to be visible for next few days. I have been 
seeing some stunning photos, some of them on mobile phones. I'm that 
person who is often wrong in camera settings and trying to learn from 
internet resources. I don't have fancy camera or lenses, but my hopes 
were raised after seeing mobile photos from Samsung devices. I should 
also mention, after spending a year just to be safe, I have finally 
stopped shooting jpeg+raw to just raw as photos seem to be more 
recognizable these days and my knowledge of darkatable and post 
processing is increasing.



Are there any tips experts willing to share for taking picture of comet. 
I have a tripod and and assumption that weather will cooperate. I know 
about and aperture and shutter priority modes, but do often get confused 
which one to use. As most of the videos and sites say, I'll be using 
aperture priority.



Thanks in advance.


Niranjan




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[darktable-user] How to find out style parameters/settings

[Niranjan Rao]

On darktable version 2.6.2/Ubuntu 18.04

I am playing and trying to understand how styles work. I did download 
few styles from dtstyle.net and imported it. If I like the final product 
after applying the style, I wanted to see it's done for each steps and 
see which step(s) impact how. Editing the style does not show module 
settings. Style text file has bunch of encoded data.



My current specific problem is one of the styles applies equalizer 
module. When style is applied, module window shows kind of slanting band 
with two straight vertical lines and two slanting horizontal lines. No 
matter what I do with the module with my changes, I am not able to 
achieve same settings. Module shows only configurable values of mix as 
1.00 and blend as off.



I'm aware of show only active modules toggle. But it does not show 
modules in the order it's applied. Is there a way to select the top most 
module automatically as I navigate through history stack?



Thanks,


Niranjan


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Re: [darktable-user] lua creating (ephemeral?) collection

[Niranjan Rao]

You probably tried this and were not happy, but just want to confirm. 
Have you checked collect images in lighttable view? It does allow you to 
search on various aspects and essentially does the same SQL others are 
talking about - but from the safety of darktable. Once you have 
selection, you can operate normally as you would otherwise do it. For 
example you can easily specify tag="this" and ISO=that from the GUI.


I have not used 3.0, but I doubt if they have taken this kind of 
functionality away.


Without knowing LUA scripts, most likely this kind functionality is 
exposed somewhere in the scripts.


Regards,

Niranjan
On 1/21/20 6:11 PM, Greg Minshall wrote:

but, it appears that, at least absent a GUI (and this would be a command
line script), there isn't a way of creating a new (ephemeral or
permanent) collection, applying filters to it, etc.




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Re: [darktable-user] Artifacts in exported image

[Niranjan Rao]

Just trying updating my PC, no update for 2.6.3 on Ubuntu 18.04 as of now.


I have not installed from any custom PPA on this PC, whatever is default 
Ubuntu release, I think I get it. I think have 2.6.3 on my work machine 
where it uses PPA. Will try it out there.


I'll try your suggestions in next couple of days and will post results here.

Regards,


Niranjan
On 11/25/19 10:37 PM, I. Ivanov wrote:


On 2019-11-25 22:18, Niranjan Rao wrote:

Ubuntu 18.04, darktable 2.6.2

Curious... why not DT 2.6.3?


More and more research I do, I am getting convinced that this is a 
problem with one of the updates of darktable or somehow my settings 
are screwed up.


I have photos from same raw exported at different times. Please check 
the photos of two giraffes  at 
https://photos.app.goo.gl/K35BT8X5HGhSzwQj6. One was exported back in 
August. I don't know if I got a darktable update since then or not. 
Exported same photo with same style today and it shows artifacts.  
None of the older images show these geometric patterns and same image 
exported today shows it, no style changes since then.



I can start with scratch, but afraid of loosing all my tags and 
edits. What will be easiest way to restore darktable to it's default 
values without loosing my edits and tag information.



Tags are stored in the .xmp files but why not trying to simply test 
without deleting anything


Check man darktable

If you start from command line like this

darktable --library :memory:

it won't read the library so you can try opening the same image and 
exporting to see if it will make any difference.



Regards,

Niranjan



- b

On 11/13/19 10:24 PM, KOVÁCS István wrote:



On Wed, 13 Nov 2019, 17:23 Niranjan Rao, <mailto:nhr...@gmail.com>> wrote:


    Darktable version: 2.6.2 on Ubuntu 18.04

    I am seeing patterns in the sky


To me, it looks like Jpeg compression artifact. It's a high-res 
photo, yet only about 200 kB. Have you tried exporting into png or 
tiff to see what the image actually looks like before compression? 
If you are no artifacts in lossless files, try exporting at a higher 
Jpeg quality setting, and, if you really need small files, use a 
lower resolution instead of increasing compression (lowering quality).


Kofa


 
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Re: [darktable-user] Artifacts in exported image

[Niranjan Rao]

Tried PNG export and it does not show any artifacts. Tried JPEG with 95% 
quality and it still shows the artifacts.  It shows artifacts at 100% 
quality too. Should I be try changing something else?


I don't recall making any changes, but that does not mean I did not 
accidentally made changes. Laptop touch pad is acting up and many times 
moves the pointer at most unexpected place automagically. This is why I 
wanted to try restoring to defaults.



I don't care about size as much. But kind of scratching my head as 
settings show max size 0 for both fields. This should export to original 
image dimensions as I understand it.


Thanks for the help, hopefully we can get to the bottom of it.

Regards,

Niranjan

On 11/25/19 11:16 PM, Remco Viëtor wrote:

On mardi 26 novembre 2019 07:18:29 CET Niranjan Rao wrote:

Ubuntu 18.04, darktable 2.6.2

More and more research I do, I am getting convinced that this is a
problem with one of the updates of darktable or somehow my settings are
screwed up.

I have photos from same raw exported at different times. Please check
the photos of two giraffes  at
https://photos.app.goo.gl/K35BT8X5HGhSzwQj6. One was exported back in
August. I don't know if I got a darktable update since then or not.
Exported same photo with same style today and it shows artifacts.  None
of the older images show these geometric patterns and same image
exported today shows it, no style changes since then.


I can start with scratch, but afraid of loosing all my tags and edits.
What will be easiest way to restore darktable to it's default values
without loosing my edits and tag information.


I notice you didn't answer Kofa's question (cited below). <250k filesize for a
16 megapixel image means that the image is strongly compressed, and that can
induce artifacts. You have basically 1 byte to encode 64 pixels, that's 1 bit
for 8 pixels (or 24 bytes)... And I know that that's not how jpeg compression
works, but it indicates the amount of information that is lost.

I'd suggest trying less compression and/or enable dithering on export. Notice
how the 1.6 MB jpeg file of the giraffes does *not* show the banding in the
sky.
If I load that file in darktable and reexport to a smaller size (~250kb) I do
get the same banding you see, at a quality setting of 25-30%. Those are not
geometric patterns, btw, the bands follow intensity levels in the original
image.

If you need the small filesize, ask yourself if you really *need* a 16M image
for the exported version. For screen display, 1960*1080 (~3.5M pixels) is
usually enough, and that in itself is less than 25% of the original image. An
image reduced in size to 1080 height (full screen for me) at a quality setting
of 85% shows no banding, and the file size is ~160 kB (so less than your bad
jpg).

Remco.


On 11/13/19 10:24 PM, KOVÁCS István wrote:

On Wed, 13 Nov 2019, 17:23 Niranjan Rao, mailto:nhr...@gmail.com>> wrote:
 Darktable version: 2.6.2 on Ubuntu 18.04
 
 I am seeing patterns in the sky


To me, it looks like Jpeg compression artifact. It's a high-res photo,
yet only about 200 kB. Have you tried exporting into png or tiff to
see what the image actually looks like before compression? If you are
no artifacts in lossless files, try exporting at a higher Jpeg quality
setting, and, if you really need small files, use a lower resolution
instead of increasing compression (lowering quality).

Kofa




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Re: [darktable-user] Artifacts in exported image

[Niranjan Rao]

Ubuntu 18.04, darktable 2.6.2

More and more research I do, I am getting convinced that this is a 
problem with one of the updates of darktable or somehow my settings are 
screwed up.


I have photos from same raw exported at different times. Please check 
the photos of two giraffes  at 
https://photos.app.goo.gl/K35BT8X5HGhSzwQj6. One was exported back in 
August. I don't know if I got a darktable update since then or not. 
Exported same photo with same style today and it shows artifacts.  None 
of the older images show these geometric patterns and same image 
exported today shows it, no style changes since then.



I can start with scratch, but afraid of loosing all my tags and edits. 
What will be easiest way to restore darktable to it's default values 
without loosing my edits and tag information.



Regards,


Niranjan


On 11/13/19 10:24 PM, KOVÁCS István wrote:



On Wed, 13 Nov 2019, 17:23 Niranjan Rao, <mailto:nhr...@gmail.com>> wrote:


Darktable version: 2.6.2 on Ubuntu 18.04

I am seeing patterns in the sky


To me, it looks like Jpeg compression artifact. It's a high-res photo, 
yet only about 200 kB. Have you tried exporting into png or tiff to 
see what the image actually looks like before compression? If you are 
no artifacts in lossless files, try exporting at a higher Jpeg quality 
setting, and, if you really need small files, use a lower resolution 
instead of increasing compression (lowering quality).


Kofa


 
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Re: [darktable-user] Artifacts in exported image

[Niranjan Rao]

Thank you, I'll try exporting in png file and post my findings. Right 
now jpeg export settings are at the default level.



Regards,

Niranjan
On 11/13/19 10:24 PM, KOVÁCS István wrote:



On Wed, 13 Nov 2019, 17:23 Niranjan Rao, <mailto:nhr...@gmail.com>> wrote:


Darktable version: 2.6.2 on Ubuntu 18.04

I am seeing patterns in the sky


To me, it looks like Jpeg compression artifact. It's a high-res photo, 
yet only about 200 kB. Have you tried exporting into png or tiff to 
see what the image actually looks like before compression? If you are 
no artifacts in lossless files, try exporting at a higher Jpeg quality 
setting, and, if you really need small files, use a lower resolution 
instead of increasing compression (lowering quality).


Kofa


 
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[darktable-user] Artifacts in exported image

[Niranjan Rao]

Darktable version: 2.6.2 on Ubuntu 18.04

I am seeing patterns in the sky - kind of concentric circles for many of 
the exported photos. Trying to understand if this is my camera 
limitation or my camera settings, issue with my styles, issues with my 
graphics card/hardware or bug in darkable.



I have uploaded raw file as well as exported image at following 
location. Darkroom view does not show this pattern, but exported image 
does show it. So far at least ten different images shot on different 
times/days show same effect.



https://photos.app.goo.gl/K35BT8X5HGhSzwQj6


Regards,


Niranjan


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Re: [darktable-user] What could be wrong?

[Niranjan Rao]

Thank you all for suggestions/pointers. Luckily/unluckily I got a 
chromium update and I no longer have my reproducible case.


There are no extensions installed and developer tools did not help as I 
get "Aw Snaps!" error from chrome. Its definitely somewhere in the 
innards of chrome as Ubuntu also shows me the error about process 
getting killed and asks me if I want to submit a bug. Other tabs work 
fine though.



On 11/1/19 6:41 AM, Šarūnas wrote:

On 10/31/19 11:42 PM, Niranjan Rao wrote:

Darktable 2.6.2 on Ubuntu 18.04

Chromium    77.0.3865.90 (Official Build) Built on Ubuntu , running on
Ubuntu 18.04 (64-bit)

I'm facing a interesting challenge and don't have any solution yet or
what exactly could be wrong. I had 4 raw files with some minor
processing done and exported. Every time I try to upload one particular
file, chromium crashes. Same style applied to 4 images, 3 get uploaded
fine and last one causes the crash.

Every image viewer I had on machine, including  firefox, chromium,
chrome works fine. Its only during uploading with one particular image
browser crashes. I have tried uploading this particular file only and it
sill crashes. As I don't like sending attachments to this list, it's a
dilemma.

I have tried rexporting the file again - no luck. This file is smallest
of all other files, so I think I can rule out the size factor.

Just wondering if anyone has encountered similar situations? I certainly
have not encountered such situation. I don't want to try uploading file
against any other browser right now for multiple reasons which has to do
with carefully setup profiles in each browser.

Too many variables. Move your carefully setup profiles aside and start
browsers anew, with their default profiles, no custom settings, no
extensions. Try uploading your file, while viewing the process in
browsers' developer tools/consoles.




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[darktable-user] What could be wrong?

[Niranjan Rao]

Darktable 2.6.2 on Ubuntu 18.04

Chromium    77.0.3865.90 (Official Build) Built on Ubuntu , running on 
Ubuntu 18.04 (64-bit)


I'm facing a interesting challenge and don't have any solution yet or 
what exactly could be wrong. I had 4 raw files with some minor 
processing done and exported. Every time I try to upload one particular 
file, chromium crashes. Same style applied to 4 images, 3 get uploaded 
fine and last one causes the crash.



Every image viewer I had on machine, including  firefox, chromium, 
chrome works fine. Its only during uploading with one particular image 
browser crashes. I have tried uploading this particular file only and it 
sill crashes. As I don't like sending attachments to this list, it's a 
dilemma.



I have tried rexporting the file again - no luck. This file is smallest 
of all other files, so I think I can rule out the size factor.



Just wondering if anyone has encountered similar situations? I certainly 
have not encountered such situation. I don't want to try uploading file 
against any other browser right now for multiple reasons which has to do 
with carefully setup profiles in each browser.



I'll try to create a isolated test case and log a bug against chromium 
tomorrow as I'm comfortable in Javascript calls browser seems to be 
making. Thankfully, this time photo is of a bird and nothing personal.



Regards,


Niranjan


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Re: [darktable-user] Struggling here...

[Niranjan Rao]

I understand, but these options need sudo rights. If someone wanted to 
install without sudo rights, then configuring build script might be a 
viable option.


As I said earlier, I have not built darktable itself, but have built (or 
struggled to build) plenty of other complicated systems.


Anyways, happy that problem is solved.

Regards,

Niranjan
On 10/9/19 8:50 AM, Druuna (JD) wrote:

Hi Niranjan,

The problem is solved: The build.sh script needs to be started with sudo
otherwise the make install step will fail.

BTW: There is no real need to provide build.sh with options. It will fall back
to the defaults set inside that script. Most notably:

   INSTALL_PREFIX_DEFAULT="/opt/darktable"
   BUILD_TYPE_DEFAULT="RelWithDebInfo"

Have a look at ./build.sh --help

Jacques.

Op Wed, 9 Oct 2019 08:35:10 -0700
Niranjan Rao Schreef:


Sorry to jump in late and this is a big thread that I have not
completely read yet.

Most of open source tools can have install directory mentioned on
command line during build time. It seems to be same case for darktable
and readme.md at github has an example which will (should) not need sudo
permissions.

You need to build with --prefix option or if you are executing cmake,
you need to have that variable (CMAKE_INSTALL_PREFIX) defined. I have
not checked darktable code, many tools programs embed the path at
compile time in the binaries generated. Default paths - meant for
standard distributions can be overridden with make variables or at
configuration time.

In my opinion it should not need sudo permissions.  Your example command
seems to be missing -DCMAKE_INSTALL_PREFIX as mentioned in readme.




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Re: [darktable-user] Struggling here...

[Niranjan Rao]

Sorry to jump in late and this is a big thread that I have not 
completely read yet.


Most of open source tools can have install directory mentioned on 
command line during build time. It seems to be same case for darktable 
and readme.md at github has an example which will (should) not need sudo 
permissions.


You need to build with --prefix option or if you are executing cmake, 
you need to have that variable (CMAKE_INSTALL_PREFIX) defined. I have 
not checked darktable code, many tools programs embed the path at 
compile time in the binaries generated. Default paths - meant for 
standard distributions can be overridden with make variables or at 
configuration time.


In my opinion it should not need sudo permissions.  Your example command 
seems to be missing -DCMAKE_INSTALL_PREFIX as mentioned in readme.



Regards,

Niranjan
On 10/7/19 2:22 AM, Bruce Williams wrote:

Hi gang,
I'm trying to update to the latest version of 2.7, but I don't 
understand what's not working.
After running "cmake --build "/home/darktable/darktable/build" 
--target install -- -j16" from the command prompt, I get, at the end 
of the log, the following:


[100%] Built target darktable-chart
Install the project...
-- Install configuration: "RELWITHDEBINFO"
-- Installing: /opt/darktable/share/locale/af/LC_MESSAGES/darktable.mo
CMake Error at po/cmake_install.cmake:41 (file):
  file INSTALL cannot copy file 
"/home/darktable/darktable/build/po/af.mo" to

  "/opt/darktable/share/locale/af/LC_MESSAGES/darktable.mo".
Call Stack (most recent call first):
  cmake_install.cmake:42 (include)


Makefile:85: recipe for target 'install' failed
make: *** [install] Error 1

Andreas S. suggested that I should get gettext, but when I tried that, 
I got the message that it's already installed and at the latest version.

Would anyone be able to offer some assistance please?
And if you could explain what is happening, that would be greatly 
appreciated! I'm not going to learn if you just say "do this, then 
that, and it'll work". :)


Also, what is the recommended procedure regarding an already-installed 
dev version?

Do you leave it where it is?
Do you uninstall it?
Does the update simply overwrite the previous build?

Thanks in advance.
Cheers,
Bruce Williams


 
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[darktable-user] Extra sensitive mouse

[Niranjan Rao]

Ubunu 18.04, darktable 2.6.2


I have two computers with same version of operating system and darktable 
installed. On one computer, sliders in darkroom are very sensitive and 
always active. For example just enable crop module and move mouse to 
image area, suddenly image flips or some parameters change as mouse 
moves through area. On other computer I have to position pointer very 
carefully and use scroll wheel to change the parameters.



As a result my images are getting some very interesting edits. Some 
accidents were actually good - accidentally flipped/rotated the image in 
the angle and madeit look better. Other times, I have to rush to 
compress history stack.



I'm missing some obvious setting somewhere on the problematic machine? I 
don't remember changing any settings on either pc, but my cat did it's 
give me attention dance on my keyboard and not sure if somehow managed 
to change some settings on problem machine.



Regards,


Niranjan


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Re: [darktable-user] Getting organized - cleaning up the database

[Niranjan Rao]

Thank you jys and Patric. This is exactly what I was looking for.


Regards,

Niranjan
On 9/27/19 4:57 PM, Patrick Shanahan wrote:

* Niranjan Rao  [09-27-19 19:53]:

Greetings,

darktable 2.6.2, Ubuntu 18.04


I'm trying to get more organized for my photos and even tagging them. I used
FSLint janitor for Ubuntu  to clear duplicate images.  I did run a query
against darktable DB to get the complete list of images and wrote a simple
shell script to check existence of these images. To my amazement, more than
50% of my images do not exist now. I'm not worried about this part as I know
I deleted these images - copying from same card in multiple locations or
sometimes using /tmp directory etc.


My problem is how do I cleanup the database? I would rather not start from
scratch or with new database as significant number of (existing) images have
tags. My shell script provides a list of images that don't exist. I want
remove these from darktable database. I can adjust my script if data being
fed needs to be in different format.


Film role may or may not exists as I am in process of jpeg files when raw
files are available, again with the help of a script. Some film roles or
directories are missing and in some cases only a particular image is missing
as raw file exists.


Side car xmp files seems to contain tag information.  So my best and easiest
option seems to be cleanup image directory, remove existing database and
reimport everything again.


Does this option sound reasonable? Any other better way to do this - like
selecting non existent or skull images from gui?

available on dt site:
   /usr/share/darktable/tools/purge_non_existing_images.sh

I believe that will help you and more quickly/easily than recreating your
db...

   




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[darktable-user] Getting organized - cleaning up the database

[Niranjan Rao]

Greetings,

darktable 2.6.2, Ubuntu 18.04


I'm trying to get more organized for my photos and even tagging them. I 
used FSLint janitor for Ubuntu  to clear duplicate images.  I did run a 
query against darktable DB to get the complete list of images and wrote 
a simple shell script to check existence of these images. To my 
amazement, more than 50% of my images do not exist now. I'm not worried 
about this part as I know I deleted these images - copying from same 
card in multiple locations or sometimes using /tmp directory etc.



My problem is how do I cleanup the database? I would rather not start 
from scratch or with new database as significant number of (existing) 
images have tags. My shell script provides a list of images that don't 
exist. I want remove these from darktable database. I can adjust my 
script if data being fed needs to be in different format.



Film role may or may not exists as I am in process of jpeg files when 
raw files are available, again with the help of a script. Some film 
roles or directories are missing and in some cases only a particular 
image is missing as raw file exists.



Side car xmp files seems to contain tag information.  So my best and 
easiest option seems to be cleanup image directory, remove existing 
database and reimport everything again.



Does this option sound reasonable? Any other better way to do this - 
like selecting non existent or skull images from gui?



Regards,


Niranjan


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Re: [darktable-user] Tag hierarchy

[Niranjan Rao]

Thank you. It works.

Looks like it's executing SQL "like" clause with one parameter. I tried 
injecting "OR" and "AND" clauses, but it did not work.


Any ideas about selecting multiple tags?


Regards,

Niranjan
On 9/19/19 7:58 PM, August Schwerdfeger wrote:

If you select a tag from the hierarchical view, it will only collect
images with the exact tag that was selected ('family' in this case).

If you want to show images from more than one tag at a time, you have to
type a wildcard ('family|%' in this case) into the text box.

--
August Schwerdfeger
aug...@schwerdfeger.name

On 9/19/19 9:15 PM, Niranjan Rao wrote:

Greetings,


On version 2.6.2/Ubuntu 18.04.


lighttable/collect images/tag works nicely and shows hierarchical
view. However I'm noticing a problem and want to make sure
understanding is wrong or it's a bug or feature is not implemented
that way.


If I have tag structure like family|member1 and family|member2, if I
select member1 or member2 I see corresponding images. However if I was
selecting family, I was expecting to see union of member1 and member2
set - or all the photos under family node. It does not show anything
as all the images are hierarchical in this case.


Am I misunderstanding the tag usage?


Regards,


Niranjan



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[darktable-user] Tag hierarchy

[Niranjan Rao]

Greetings,


On version 2.6.2/Ubuntu 18.04.


lighttable/collect images/tag works nicely and shows hierarchical view. 
However I'm noticing a problem and want to make sure understanding is 
wrong or it's a bug or feature is not implemented that way.



If I have tag structure like family|member1 and family|member2, if I 
select member1 or member2 I see corresponding images. However if I was 
selecting family, I was expecting to see union of member1 and member2 
set - or all the photos under family node. It does not show anything as 
all the images are hierarchical in this case.



Am I misunderstanding the tag usage?


Regards,


Niranjan


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Re: [darktable-user] Images without tags

[Niranjan Rao]

Thank you.

I had a look at the script and seems like it does what I want to do. I 
don't understand lua scripts well, but my programming experience says 
its almost doing same thing, except I was using the database directly 
and this one is official API.


Thanks again,

Niranjan

On 9/13/19 11:53 PM, thokster wrote:

Hi,

maybe the lua script "select_untagged" is what you are looking for.

https://github.com/darktable-org/lua-scripts



Am 14.09.19 um 02:47 schrieb Niranjan Rao:

Greetings

at
darktable version 2.6.2 on Ubuntu 18.04


I'm going through painful exercise of tagging large number of images. 
I'm slowly opening one by one folder and tagging the image based on 
event/place or whatever.



Is there anyway to find images not tagged in current collection - or  
folder? Barring any other way available from darktable UI, I 
inspected the database structure (library.db) and came up with 
following query. With the full acknowledgment I'm opening darktable 
private database in readonly mode, this should be enough to get me 
started. Any thoughts/opinions?


Query basically getting file names in current film roll which don't 
have entries in tag table for the tags that don't start with darktable



select filename from images i where i.film_id = (
select id from film_rolls f where f.folder like '%108___05'
)
and not exists (select 1 from tagged_images t, used_tags u where 
t.imgid = i.id

and u.id = t.tagid and u.name not like 'darktable%'
)


Regards,


Niranjan

 


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[darktable-user] Images without tags

[Niranjan Rao]

Greetings


darktable version 2.6.2 on Ubuntu 18.04


I'm going through painful exercise of tagging large number of images. 
I'm slowly opening one by one folder and tagging the image based on 
event/place or whatever.



Is there anyway to find images not tagged in current collection - or  
folder? Barring any other way available from darktable UI, I inspected 
the database structure (library.db) and came up with following query. 
With the full acknowledgment I'm opening darktable private database in 
readonly mode, this should be enough to get me started. Any 
thoughts/opinions?


Query basically getting file names in current film roll which don't have 
entries in tag table for the tags that don't start with darktable



select filename from images i where i.film_id = (
select id from film_rolls f where f.folder like '%108___05'
)
and not exists (select 1 from tagged_images t, used_tags u where t.imgid 
= i.id

and u.id = t.tagid and u.name not like 'darktable%'
)


Regards,


Niranjan


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Re: [darktable-user] Export problem

[Niranjan Rao]

I believe darktable does support my camera. It's Sony SLT A37.

Photos are year old photos and had been exported at least once. I was 
playing with photos as my understanding of darktable and photography is 
always changing. Goal was to export it again with different modules.


I tried with other images in same set, does work as accepted, only this 
one somehow gets corrupted.



Regards,

Niranjan
On 9/3/19 2:13 PM, Patrick Shanahan wrote:

* Patrick Shanahan  [09-03-19 17:10]:

* Niranjan Rao  [09-03-19 16:31]:

Greetings,

Darkable 2.6.2 on Ubuntu 18.04

Raw file at
https://drive.google.com/file/d/1zt-3c-dyAsbu-iJiSxOhfFpRdT9HMaE-/view

Exported image at
https://drive.google.com/file/d/16F1h8lbGKYIrtwi9oRhdajmHCLEVFr-2/view

This is the first time I am seeing darkroom view of the image not matching
with exported image and wondering what's going on. I'm getting totally
different colors (awful blue/green tinge) in exported image. Darkroom tab
does not show these colors and image looks presentable.

I have not done any extra processing and only following modules are applied,
can provide XMP file if needed.

1. Original

2. Orientation

3. Sharpen

4. Base curve

5. Levels

6. Color contrast

original
orientation
sharpen
highlight reconstruction
lens correction
chromatic aberations
local contrast
exposure (default correction)

http://wahoo.no-ip.org/~paka/DSC03298.jpg
appears quite similar to the depction of the origianl raw.  do not know
what you did from what you posted.
darktable-2.7.0~git1664.c93795b73

possibly the version of dt you use does not support your camera...




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[darktable-user] Export problem

[Niranjan Rao]

Greetings,

Darkable 2.6.2 on Ubuntu 18.04

Raw file at 
https://drive.google.com/file/d/1zt-3c-dyAsbu-iJiSxOhfFpRdT9HMaE-/view


Exported image at 
https://drive.google.com/file/d/16F1h8lbGKYIrtwi9oRhdajmHCLEVFr-2/view


This is the first time I am seeing darkroom view of the image not 
matching with exported image and wondering what's going on. I'm getting 
totally different colors (awful blue/green tinge) in exported image. 
Darkroom tab does not show these colors and image looks presentable.


I have not done any extra processing and only following modules are 
applied, can provide XMP file if needed.


1. Original

2. Orientation

3. Sharpen

4. Base curve

5. Levels

6. Color contrast


Thanks and regards,


Niranjan


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Re: [darktable-user] Creating HDR images

[Niranjan Rao]

Thank you. I'll try it out.

I did manage to find few interesting tags from exif information - just 
by comparing tag information between three images shot by camera for hdr 
vs single image. It looks promising for one of my camera. Did not get 
enough time yet to investigate if same concept can be applied to other 
camera.


Now debating over Java vs (bash) shell script to get exif info and 
collect the potential images I'm interested in.


Regards,

Niranjan
On 8/23/19 6:56 PM, William Ferguson wrote:

To use the lua scripts do the following

Open a terminal then:

cd .config/darktable
git clone https://github.com/darktable-org/lua-scripts lua
ln -s lua/tools/script_manager.lua luarc

start darktable
a module will be present at the lower left called script manager.  
Open it, select the scripts you want to run and enable them, and enjoy


There is more information at 
https://github.com/darktable-org/lua-scripts/readme.md


Bill

On Fri, Aug 23, 2019 at 8:13 PM Niranjan Rao <mailto:nhr...@gmail.com>> wrote:


Greetings,

On darktable version 2.6.2, Ubuntu 18.04.


I know how to generate HDR images in darktable, basically select
images
from lighttable and under selected images menu, click on create HDR.
This works.


However it's getting tedious for doing many images and getting error
prone. So, I'm exploring batch options. Anyone has any ideas? I'm
comfortable writing shell scripts or Java code if needed. I have not
explored darkable/Lua combination yet.


For batch mode I see I have to do following

Figure out images which can be grouped together for HDR. I don't
know if
cameras write any special tag in raw file that might help. If not,
only
option seems to be check tags like time stamp, focal length and such
that will remain same. For my purposes, these fields most likely
will do
the job and get me the names of the file unless I find a better
way to
identify the images.


Once I have managed to find the group, next task is convince
darktable/lua to create HDR from the selected images. This is
where I am
stuck. Quick search revealed
https://github.com/darktable-org/lua-scripts which has few promising
leads e.g. enfuse. I'm not clear how to use it.


Looking for any pointers/help.


Thanks in advance,


Niranjan


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[darktable-user] Creating HDR images

[Niranjan Rao]

Greetings,

On darktable version 2.6.2, Ubuntu 18.04.


I know how to generate HDR images in darktable, basically select images 
from lighttable and under selected images menu, click on create HDR. 
This works.



However it's getting tedious for doing many images and getting error 
prone. So, I'm exploring batch options. Anyone has any ideas? I'm 
comfortable writing shell scripts or Java code if needed. I have not 
explored darkable/Lua combination yet.



For batch mode I see I have to do following

Figure out images which can be grouped together for HDR. I don't know if 
cameras write any special tag in raw file that might help. If not, only 
option seems to be check tags like time stamp, focal length and such 
that will remain same. For my purposes, these fields most likely will do 
the job and get me the names of the file unless I find a better way to 
identify the images.



Once I have managed to find the group, next task is convince 
darktable/lua to create HDR from the selected images. This is where I am 
stuck. Quick search revealed 
https://github.com/darktable-org/lua-scripts which has few promising 
leads e.g. enfuse. I'm not clear how to use it.



Looking for any pointers/help.


Thanks in advance,


Niranjan


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[darktable-user] Orientation getting changed in portrait mode

[Niranjan Rao]

darktable version 2.6.2 on Ubuntu 18.04


I'm noticing change in orientation after applying a style. While root 
cause probably is orientation entries my style, I'm wondering why even 
"Original" entry from history stack - 0th element in the history, does 
not show original image - or show it in portrait mode. Even compress 
history stack does not bring the original image. Going to lightable view 
and clicking on discard history stack brings up the original image.



Regards,


Niranjan


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Re: [darktable-user] A way to redeem myself

[Niranjan Rao]

Thank you, I'll try that route.


Regards,


Nirajan
On 4/7/19 10:48 AM, David Vincent-Jones wrote:


A good starting point for receiving ideas on ways to process your 
image would be to upload the image to the PIXLS.US forum where there 
are numerous darktable people who will gladly work to find the best 
solution for your very nice portrait. . https://discuss.pixls.us


On 2019-04-07 10:13 a.m., Anton Aylward wrote:

On 2019-04-07 11:45 a.m., Niranjan Rao wrote:

At this point, except from camera being on Av mode, I don't remember any other
settings such as exposure changed from default. I did turn on the flash as
camera prompted me to turn on the flash even if there was plenty of light in the
room.


I have uploaded one CR2 file at
https://drive.google.com/file/d/1CUTt7tEo0rmKwP99akAmJaV8dpJr6TBz/view?usp=sharing

I've made many mistakes of that order, the most dramatic was a day's outdoor
shooting with the camera set to incandescent light.  AWB solves many sins!
but yes, darktable managed to correct that.

Grain?  Well there are settings/tools for that.
Have you read the user manual?  Try section 3.4.4
Have you googled for "darktable remove grain"
That turns up a couple of videos.
For example:https://www.roberthutton.net/archives/160

I do note that the file you uploaded has a slight problem.  Some of the settings
/should/ be determinable by looking at the raw file's EXIF values.  But when I
download and scan I get an error.
Perhaps you could check and post the EXIF values from the original.





 
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Re: [darktable-user] A way to redeem myself

[Niranjan Rao]

I did upload the CR2 file from my camera, but it looks like google is 
poking its nose. As suggested in other replies I'll try to upload at 
other places.


Thank you,

Niranjan
On 4/7/19 10:13 AM, Anton Aylward wrote:

On 2019-04-07 11:45 a.m., Niranjan Rao wrote:


At this point, except from camera being on Av mode, I don't remember any other
settings such as exposure changed from default. I did turn on the flash as
camera prompted me to turn on the flash even if there was plenty of light in the
room.


I have uploaded one CR2 file at
https://drive.google.com/file/d/1CUTt7tEo0rmKwP99akAmJaV8dpJr6TBz/view?usp=sharing

I've made many mistakes of that order, the most dramatic was a day's outdoor
shooting with the camera set to incandescent light.  AWB solves many sins!
but yes, darktable managed to correct that.

Grain?  Well there are settings/tools for that.
Have you read the user manual?  Try section 3.4.4
Have you googled for "darktable remove grain"
That turns up a couple of videos.
For example: https://www.roberthutton.net/archives/160

I do note that the file you uploaded has a slight problem.  Some of the settings
/should/ be determinable by looking at the raw file's EXIF values.  But when I
download and scan I get an error.
Perhaps you could check and post the EXIF values from the original.






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[darktable-user] A way to redeem myself

[Niranjan Rao]

Greetings,


Version 2.6.1 on Ubuntu 18.04

I am just a beginner and learning my way around. I read a lot, watch 
video tutorials, play around the knobs on camera and in darktable only 
on "safe unimportant" photos. Otherwise I stay safe on auto mode.



Yesterday was a special day and she was all dressed up. I forgot my 
camera was not on auto mode. Results are all noisy and grainy and my 
limited experience does not help me to cleanup the results. Thankfully I 
have some photos from my phone camera which are looking better than my 
Canon camera photos.



At this point, except from camera being on Av mode, I don't remember any 
other settings such as exposure changed from default. I did turn on the 
flash as camera prompted me to turn on the flash even if there was 
plenty of light in the room.



I have uploaded one CR2 file at 
https://drive.google.com/file/d/1CUTt7tEo0rmKwP99akAmJaV8dpJr6TBz/view?usp=sharing


Is there a way to redeem myself? If you can save the day, please let me 
know the steps so that I can apply to other pictures.



Thanks in advance,


Niranjan


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[darktable-user] Creating HDR images

[Niranjan Rao]

On Ubuntu 16.04, darktable 2.4.1

I have experimented with "selected images/ create HDR" and happy with 
the results. I have setup my camera to do bracketing and I select three 
raw images from the camera manually and click on create HDR button.



Is there anyway to automate the process - may be with the aid of lua 
script or something as it's getting tedious to do the same thing for 
large number of images.



I was thinking some command line script where I can pass three file 
names to darktable and darktable will create HDR files from these. I can 
(relatively) easily write a script where I can get the file triplets, 
but don't know how ask darktable to combine these three and create HDR file.



Is there any way to specify where HDR output files will be created? 
Otherwise, I am getting lot of duplicate looking images in my lighttable 
view.



Regards,


Niranjan


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Re: [darktable-user] To view the original image in lighttable

[Niranjan Rao]

I want to see it in lighttable and darkroom and for many images as I am 
searching for the original image. Can I do this in lighttable and with 
many images?


On 03/16/2018 02:22 PM, Maurizio Paglia wrote:
Expand the history stack panel. Single left click on a development 
step will show the image at that precise step. Click on the first step 
to see the original unprocessed raw.

Maurizio

Il ven 16 mar 2018, 21:32 Niranjan Rao <nhr...@gmail.com 
<mailto:nhr...@gmail.com>> ha scritto:


On darktable 2.4.1/Ubuntu 16.04.


Is there any way to see original unprocessed image in lighttable after
image has been worked on?


I have few photos that I worked on, some of them heavily cropped.
Now I
want to try another approach to some of these photos, but could not
remember which one I had cropped. I know about lighttable select
option
using which only edited files can be shown, but that also was
little too
much of search.

Is there a setting somewhere I can flip views in lighttable to show
original and not edited photo?


Regards,


Niranjan


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[darktable-user] To view the original image in lighttable

[Niranjan Rao]

On darktable 2.4.1/Ubuntu 16.04.


Is there any way to see original unprocessed image in lighttable after 
image has been worked on?



I have few photos that I worked on, some of them heavily cropped. Now I 
want to try another approach to some of these photos, but could not 
remember which one I had cropped. I know about lighttable select option 
using which only edited files can be shown, but that also was little too 
much of search.


Is there a setting somewhere I can flip views in lighttable to show 
original and not edited photo?



Regards,


Niranjan


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Re: [darktable-user] Can't discard history stack

[Niranjan Rao]

In lighttable screen, there is history stack menu which has discard 
button. Perhaps this is what you are looking for?


Regards,

Niranjan
On 10/20/2016 01:11 PM, Scott wrote:
I always like to compress my history stacks after I finish editing.  
Sometimes I forget.  I'm curious if there is a way to compress all 
history stacks of all images in the database (or those selected)?  
Maybe with a lua scri




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[darktable-user] Darktable styles

[Niranjan Rao]

Greetings,

As a new comer to raw image development, I figured the best way to learn 
is to look at what others have done and see what I like. I found a 
tar.gz file somewhere on the web that contains 46 styles.


Few questions:

1. Personally I don't think it's possible, but want to double check. If 
I find darktable styles on some random web site and apply those styles, 
will I face any security issues? In other words is there a possibility 
of getting hacked while using imported styles. As far as I could see 
styles are XML documents and just set the parameters of the modules and 
contain no executable code.


2. I would like to apply the style and export the results and then 
compress history stack, apply next style and repeat. My initial goal is 
to find out what style I like and see how that style is built and 
experiment with style modules. Can I script this - apply and export part 
and loop around all available styles? It becomes cumbersome to repeat 
same process for all 46 styles and lot of images.



Regards,

Niranjan


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[darktable-user] https://dtstyle.net/ - SSL certificate expired

[Niranjan Rao]

Greetings,


Not sure where to inform this, but hopefully someone on the list knows 
about maintainer of https://dtstyle.net/. SSL certificate on this style 
has expired last month and browser is complaining.



Regards,


Niranjan


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[darktable-user] Noisy exports

[Niranjan Rao]

Greetings,

I am new to raw image development and trying to figure out what I am 
doing wrong.


My main problem seem to be stemming out from the fact that when I export 
the image, it does not look like image in darkroom screen. I am trying 
to process images generated by Canon PowerShot SX60 HS. Exported image 
always felt more noisy or grainy.


A little bit of experimentation and tinkering of many knobs, I figured 
that exported image quality seems to be function of size. If I leave 
exported size to 0, darktable exports in default size (in my case, it's 
4768 X 3516), exported images look grainy. If I export in smaller size - 
say 1600, they look much nicer.


Is this normal - having noise in default sized exported image and 
looking cleaner in smaller image? Is there anything I can do to address 
this issue?


Alternatively, what would be good or usual size to export the image? I 
am just a home user of camera and darktable, rarely print my images and 
images are used only for viewing by family and sharing across various 
mediums such as facebook and WhatsApp.


I on Ubuntu 16.04, using darktable version 2.0.3 from standard ubuntu 
repositories. I am using standard Ubuntu image viewer to view exported 
image.



Best,

Niranjan


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