Re: [darktable-user] Help needed with Canon CR2 pictures

[William Ferguson]

I'll shoot some sraws and mraws with my 7D and 7DmkII and submit the
updates.

On Thu, Apr 1, 2021 at 1:01 PM Martin Straeten 
wrote:

> Unfortunatly exiftools doesn’t give helpful hints: there’s also
> Average Black Level : 2048 2048 2048 2048
> But this results in massive clipping of the dark areas, losing a whole
> bunch of details.
> I also checked the raw.pixls.us image (
> https://raw.pixls.us/getfile.php/130/nice/Canon%20-%20EOS%207D%20-%20sRAW1%20(mRAW)%20(3:2).CR2)
> - unfortunately far away from being norm lit
> Setting black points 0-3 to about 118 -125 seems to give a most neutral
> result (based on the black keyboard )
> And it’s also fine for the OPs image, so maybe its a good initial value
> for tweaking ...
>
> Am 01.04.2021 um 17:17 schrieb William Ferguson :
>
> Just checked rawspeed and the values are 0 for black point.  You can use
> exiftool and look at the
> Average Black Level to get a good point.  For the full size raw it's
> 2048.
>
> On Thu, Apr 1, 2021 at 10:10 AM Martin Straeten 
> wrote:
>
>> No, the OP sent me a cr2 file so i could inspect it.  It seems to be a
>> invalid preset for raw blackpoint. This doesn’t affect the full raw, just
>> if sraw or mraw is used. There’re no proper blackpoint values provided.
>>
>> > Am 01.04.2021 um 14:50 schrieb KOVÁCS István :
>> >
>> > Since the OP said it mainly affects the shadows, are you sure it's
>> > because of highlight clipping?
>> >
>> 
>> > darktable user mailing list
>> > to unsubscribe send a mail to
>> darktable-user+unsubscr...@lists.darktable.org
>> >
>>
>> 
>> darktable user mailing list
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> 
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Re: [darktable-user] Help needed with Canon CR2 pictures

[Martin Straeten]

Unfortunatly exiftools doesn’t give helpful hints: there’s also 
Average Black Level : 2048 2048 2048 2048
But this results in massive clipping of the dark areas, losing a whole bunch of 
details.
I also checked the raw.pixls.us  image 
(https://raw.pixls.us/getfile.php/130/nice/Canon%20-%20EOS%207D%20-%20sRAW1%20(mRAW)%20(3:2).CR2)
 - unfortunately far away from being norm lit 
Setting black points 0-3 to about 118 -125 seems to give a most neutral result 
(based on the black keyboard )
And it’s also fine for the OPs image, so maybe its a good initial value for 
tweaking ...

> Am 01.04.2021 um 17:17 schrieb William Ferguson :
> 
> Just checked rawspeed and the values are 0 for black point.  You can use 
> exiftool and look at the
> Average Black Level to get a good point.  For the full size raw it's 2048.  
> 
> On Thu, Apr 1, 2021 at 10:10 AM Martin Straeten  > wrote:
> No, the OP sent me a cr2 file so i could inspect it.  It seems to be a 
> invalid preset for raw blackpoint. This doesn’t affect the full raw, just if 
> sraw or mraw is used. There’re no proper blackpoint values provided. 
> 
> > Am 01.04.2021 um 14:50 schrieb KOVÁCS István  > >:
> > 
> > Since the OP said it mainly affects the shadows, are you sure it's
> > because of highlight clipping?
> > 
> > darktable user mailing list
> > to unsubscribe send a mail to 
> > darktable-user+unsubscr...@lists.darktable.org 
> > 
> > 
> 
> darktable user mailing list
> to unsubscribe send a mail to darktable-user+unsubscr...@lists.darktable.org 
> 
> 
> 
>  
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> darktable-user+unsubscr...@lists.darktable.org 



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Re: [darktable-user] Help needed with Canon CR2 pictures

[William Ferguson]

Just checked rawspeed and the values are 0 for black point.  You can use
exiftool and look at the
Average Black Level to get a good point.  For the full size raw it's 2048.

On Thu, Apr 1, 2021 at 10:10 AM Martin Straeten 
wrote:

> No, the OP sent me a cr2 file so i could inspect it.  It seems to be a
> invalid preset for raw blackpoint. This doesn’t affect the full raw, just
> if sraw or mraw is used. There’re no proper blackpoint values provided.
>
> > Am 01.04.2021 um 14:50 schrieb KOVÁCS István :
> >
> > Since the OP said it mainly affects the shadows, are you sure it's
> > because of highlight clipping?
> >
> 
> > darktable user mailing list
> > to unsubscribe send a mail to
> darktable-user+unsubscr...@lists.darktable.org
> >
>
> 
> darktable user mailing list
> to unsubscribe send a mail to
> darktable-user+unsubscr...@lists.darktable.org
>
>


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Re: [darktable-user] Help needed with Canon CR2 pictures

[Martin Straeten]

No, the OP sent me a cr2 file so i could inspect it.  It seems to be a invalid 
preset for raw blackpoint. This doesn’t affect the full raw, just if sraw or 
mraw is used. There’re no proper blackpoint values provided. 

> Am 01.04.2021 um 14:50 schrieb KOVÁCS István :
> 
> Since the OP said it mainly affects the shadows, are you sure it's
> because of highlight clipping?
> 
> darktable user mailing list
> to unsubscribe send a mail to darktable-user+unsubscr...@lists.darktable.org
> 

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Re: [darktable-user] Help needed with Canon CR2 pictures

[KOVÁCS István]

Since the OP said it mainly affects the shadows, are you sure it's
because of highlight clipping?

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Re: [darktable-user] Help needed with Canon CR2 pictures

[Martin Straeten]

That’s no bug, thats a feature. After importing lighttable shows the embedded 
jpg. in darkroom you can see the raw processed with darktable modules instead 
of the camera internal processing.
If it’s magenta there might be an issue with the default white balance 
settings. I don’t think thats a general issue with darktable since my old 7D 
pics doesn’t show a magenta tint in shadows if processed just with the 
mandatory modules. (scene referred workflow as well as display referred 
workflow)
But 7d is known for being sensitive to highlight clipping, so if you get 
magenta in highlights you might activate highlight reconstruction ,reconstruct 
in lch‘ mode. But better avoid clipping highlights.
Maybe you need to provide a xmp file of an affected image so it’s possible to 
check the settings. 

> Am 01.04.2021 um 10:20 schrieb Jutta Juutinen :
> 
> 
> Hi,
> 
> just started shooting with my canon 7D at raw format. When I import the 
> pictures (in CR2 format) to darktable they look just fine, but when I open 
> them to edit, they get this very magenta tint, especially shadows are turned 
> automatically purple/magenta. Apparently there are other people with Canon 
> also with this problem. Is this possibly some kind of bug or problem with the 
> white balance darktable automatically creates? 
> 
> BR Jutta Juutinen 
> 
>  
> darktable user mailing list to unsubscribe send a mail to 
> darktable-user+unsubscr...@lists.darktable.org 
> =


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Re: [darktable-user] Help

[Terry Pinfold]

Hi Peter,
 The method suggested by Jason works really well and is similar to the
method I have used in Lightroom. But be careful as trashing an image
removes it from your hard drive permanently (unless you recover from your
recycle bin). The other option is to use remove option which only removes
it from the Darktable collection but leaves the original on the hard drive.
BTW I have used Lightroom for many years. It is quick and easy to use which
is its real strength but the creative control in Darktable is so much
greater. Darktable has a steep learning curve but well worth investing time
in.

Cheers
  Terry

On Wed, 8 Apr 2020 at 05:35, Jason Polak  wrote:

> Dear Peter,
>
> My method is basically to reject the picture (you can use the reject key
> "r" or just keep it at 1 star) and then select all rejected image at the
> top of the window. Then you can use the "Trash" button on the right in
> "Selected Images" to send the images to the trash.
>
> Jason
>
> On 2020-04-07 6:15 a.m., Peter Schlaufer wrote:
> > Hello
> >
> > I am with darktable only since a few days after having been with
> > Lightroom for many years and the some time with Luminar. I therefor have
> > still quite a bit to learn. From what I have experienced until noe I am
> > really satisfied. The one problem I am looking for Help is: Using
> > darktable for culling the pictures necessitates that I would like to
> > discard the ones I do not want to proceed with. But when I am thrashing
> > the pictures they do disappear from darktable however not from the
> > drive, which is what I would like they would. This is also contrary to
> > the description. I think I have chosen the correct adjustments. Anyone
> > can help?
> >
> > peterpe...@schlaufer.ch 
> >
> >
> 
> > darktable user mailing list to unsubscribe send a mail to
> > darktable-user+unsubscr...@lists.darktable.org
>
> 
> darktable user mailing list
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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] Help

[Jason Polak]

Dear Peter,

My method is basically to reject the picture (you can use the reject key
"r" or just keep it at 1 star) and then select all rejected image at the
top of the window. Then you can use the "Trash" button on the right in
"Selected Images" to send the images to the trash.

Jason

On 2020-04-07 6:15 a.m., Peter Schlaufer wrote:
> Hello
> 
> I am with darktable only since a few days after having been with
> Lightroom for many years and the some time with Luminar. I therefor have
> still quite a bit to learn. From what I have experienced until noe I am
> really satisfied. The one problem I am looking for Help is: Using
> darktable for culling the pictures necessitates that I would like to
> discard the ones I do not want to proceed with. But when I am thrashing
> the pictures they do disappear from darktable however not from the
> drive, which is what I would like they would. This is also contrary to
> the description. I think I have chosen the correct adjustments. Anyone
> can help?
> 
> peterpe...@schlaufer.ch 
> 
> 
> darktable user mailing list to unsubscribe send a mail to
> darktable-user+unsubscr...@lists.darktable.org

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Re: [darktable-user] Help

[Guillermo Rozas]

Hi Peter,

> Using darktable for culling the pictures necessitates that I would like to 
> discard the ones I do not want to proceed with. But when I am thrashing the 
> pictures they do disappear from darktable however not from the drive, which 
> is what I would like they would. This is also contrary to the description. I 
> think I have chosen the correct adjustments. Anyone can help?

How are you deleting the images? Note that there is a difference
between removing from darktable and deleting/trashing the file (both
available in the "Selected images" module,
https://darktable.gitlab.io/doc/en/selected_images.html).

Regards,
Guillermo

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Re: [darktable-user] Help!

[Matt Maguire]

Maybe your database is corrupted? If you stop the program, open up a
terminal and type:
mv ~/.config/darktable ~/.config/darktable.old

then type:
/Applications/darktable.app/Contents/MacOS/darktable

maybe it works again? If not, let us know what error message you see in the
terminal.


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Re: [darktable-user] Help!

[Michael Kefeder]

Hi Peter

you can start it from terminal with debugging on by typing this:

/Applications/darktable.app/Contents/MacOS/darktable -d all

for more options (limit debugging to certain things) check the --help

It'll show you on terminal stdout what problem it runs into, with that info
you can either fix it yourself or ask the list again for further input

br
 mike

Am So., 5. Apr. 2020 um 11:23 Uhr schrieb Peter von Walter <
vwal...@kabelbw.de>:

> Hi,
>
> i installed and used Darktable already on my Mac (Catalina) for a while,
> but suddenly the programm stopped and i could not, even after a reinstall,
> restart it again.
> It simply does not run anymore.
> In the meantime i tried to reinstall with homebrew. Did not help!
> Can you help me?
>
> Greetings
> Peter
>
> PS: How can i clean, remove maybe faulty files from my
> system?
> darktable user mailing list
> to unsubscribe send a mail to
> darktable-user+unsubscr...@lists.darktable.org
>
>


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Re: [darktable-user] Help updating lensfun?

[Richard Trinkner]

Thanks very much for the pointer.

As it turns out, I had two versions of lensfun on my Ubuntu system: the
distro version and a newer version that I compiled from source.

The lensfun-update-data program reported a socket error for me.  Editing
the file lensfun-update-file to remove a line that referenced "sourceforge"
solved the problem.

More details at https://discuss.pixls.us/t/darktable-lensfun2/12457.

Thanks,

Richard

On Thu, Aug 15, 2019 at 7:39 AM Šarūnas  wrote:

> On 8/14/19 8:05 PM, Richard Trinkner wrote:
> > HI folks,
> >
> > I'm using darkable 2.6.2 on Ubuntu Linux 19.04.
> >
> > My lens (NIkon 200-500mm f/5.6 ER VR) does not appear in the lens
> > correction choices.
> >
> > I downloaded the latest master branch of lensfun from github,
> > compiled it and installed it, apparently successfully.
> >
> > The new version of lensfun does in fact have correction data for my
> > lens.  It's been installed to
> > /usr/local/share/lensfun/version_2/slr-nikon.xml.
> >
> > Nevertheless, when I restart darktable, the lens choice list does
> > not include my lens.
>
> To get newly added lens corrections it suffices to update just the
> lensfun database. It can be done by running `lensfun-update-data`
> utility (part of liblensfun-bin package). This will bring in corrections
> for your 200-500mm Nikkor.
>
> As for the latest lensfun compiled from source, you may find that
> darktable is complaining about lensfun database version (if you start
> darktable from command line, for example).
>
> --
> Šarūnas Burdulis
> math.dartmouth.edu/~sarunas
>
>


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Re: [darktable-user] Help updating lensfun?

[Šarūnas]

On 8/14/19 8:05 PM, Richard Trinkner wrote:
> HI folks,
> 
> I'm using darkable 2.6.2 on Ubuntu Linux 19.04.
> 
> My lens (NIkon 200-500mm f/5.6 ER VR) does not appear in the lens 
> correction choices.
> 
> I downloaded the latest master branch of lensfun from github,
> compiled it and installed it, apparently successfully.
> 
> The new version of lensfun does in fact have correction data for my 
> lens.  It's been installed to 
> /usr/local/share/lensfun/version_2/slr-nikon.xml.
> 
> Nevertheless, when I restart darktable, the lens choice list does
> not include my lens.

To get newly added lens corrections it suffices to update just the
lensfun database. It can be done by running `lensfun-update-data`
utility (part of liblensfun-bin package). This will bring in corrections
for your 200-500mm Nikkor.

As for the latest lensfun compiled from source, you may find that
darktable is complaining about lensfun database version (if you start
darktable from command line, for example).

-- 
Šarūnas Burdulis
math.dartmouth.edu/~sarunas



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Re: [darktable-user] Help! I screwed up

[Ralph Venté]

This works for me on 2.0 and requires that you don't use groups for
organisation:
Group files (the 'G' on the top right of the light table view, which
collapses duplicates into one group)
Control + A (selects all, it only selects the first image in the group)
Ungroup (press the 'G' again to ungroup)
Control + I (invert selection)
all your duplicates should now be selected and you can now delete them.

hope this helps
-triaux

p.s. this is my first contribution on the mailing list so I really hope I
didn't just make a fool of myself by not understanding the problem :p

On Fri, 20 May 2016 at 23:39 Dr. Marc Arnold Bach <
marc.arnold.b...@googlemail.com> wrote:

> Now its a bit late but think about moving to btrfs filesystem or zfs which
> is btrfs big brother.
> Snapshots do not replace backup but are extremly  cheap.
> Create a script that takes a snapshot before it starts DT or simply create
> a snapshot every 5 mins and delete after 1 hour or a day.
>
> Sent mobile
>
> > Am 20.05.2016 um 22:34 schrieb darkta...@911networks.com:
> >
> > On Sat, 21 May 2016 07:55:11 +1200
> > johannes hanika  wrote:
> >
> >> i would probably ctrl-a and remove all files from db (be sure not to
> >> delete them ;) ), then delete the _01. xmp files, then re-import.
> >>
> >> how many images are we talking about? hope it's limited to <1k ..
> >
> > We are talking about 1900 spread over 5 film rolls/directories.
> >
> > I did a backup of the database yesterday at 1pm (actually every day,
> > a rolling backup of the db for 10 days).
> >
> > So what about:
> >
> > 1. delete the _01.cr2.xmp files
> > 2. restore the db
> >
> > --
> > sknahT
> >
> > vyS
> >
> 
> > darktable user mailing list
> > to unsubscribe send a mail to
> darktable-user+unsubscr...@lists.darktable.org
> >
>
> 
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Re: [darktable-user] Help! I screwed up

[Dr. Marc Arnold Bach]

Now its a bit late but think about moving to btrfs filesystem or zfs which is 
btrfs big brother. 
Snapshots do not replace backup but are extremly  cheap. 
Create a script that takes a snapshot before it starts DT or simply create a 
snapshot every 5 mins and delete after 1 hour or a day.

Sent mobile

> Am 20.05.2016 um 22:34 schrieb darkta...@911networks.com:
> 
> On Sat, 21 May 2016 07:55:11 +1200
> johannes hanika  wrote:
> 
>> i would probably ctrl-a and remove all files from db (be sure not to
>> delete them ;) ), then delete the _01. xmp files, then re-import.
>> 
>> how many images are we talking about? hope it's limited to <1k ..
> 
> We are talking about 1900 spread over 5 film rolls/directories.
> 
> I did a backup of the database yesterday at 1pm (actually every day,
> a rolling backup of the db for 10 days). 
> 
> So what about:
> 
> 1. delete the _01.cr2.xmp files
> 2. restore the db
> 
> -- 
> sknahT
> 
> vyS
> 
> darktable user mailing list
> to unsubscribe send a mail to darktable-user+unsubscr...@lists.darktable.org
> 

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Re: [darktable-user] Help! I screwed up

[darktable]

On Sat, 21 May 2016 07:55:11 +1200
johannes hanika  wrote:

>i would probably ctrl-a and remove all files from db (be sure not to
>delete them ;) ), then delete the _01. xmp files, then re-import.
>
>how many images are we talking about? hope it's limited to <1k ..

We are talking about 1900 spread over 5 film rolls/directories.

I did a backup of the database yesterday at 1pm (actually every day,
a rolling backup of the db for 10 days). 

So what about:

1. delete the _01.cr2.xmp files
2. restore the db

-- 
sknahT

vyS

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