Hi All,
I am using DT on a windows computer and really loving the experience.
Great job by all the compilers. However, I have a friend who has a Mac computer
and edits in ProPhoto color profile. DT and Mac do not seem to work together to
give the correct colors in this profile yet they are perfect on my Windows
computer. Is this a known issue, is there a workaround or fix? Help would be
really appreciated.
Dr Terry Pinfold
Cytometry & Histology Lab Manager
University of Tasmania
17 Liverpool St, Hobart, 7000
Ph 6226 4846 or 0408 699053
________________________________
From: David Vincent-Jones <[email protected]>
Sent: Saturday, 24 August 2019 12:18 PM
To: [email protected] <[email protected]>
Subject: Re: [darktable-user] Creating HDR images
https://photographylife.com/iso-invariance-explained<https://photographylife.com/iso-invariance-explained>
You might want to look at this article regarding Invariance. Many/most recent
cameras have invariant sensors that allow the subject ISO to be modified in
post production. base-curve/fusion in dt makes use of invariance in a similar,
but simplified, manner to HDR but using just a single image. You may find this
interesting as a means of DR extension.
David
On 8/23/19 5:13 PM, Niranjan Rao 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<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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