Project

General

Profile

Bug #10389

Split toning results shouldn't depend on output profile

Added by Serg N almost 5 years ago. Updated almost 5 years ago.

Status:
Triaged
Priority:
Low
Assignee:
-
Category:
Darkroom
Target version:
-
Start date:
03/28/2015
Due date:
% Done:

20%

Estimated time:
Affected Version:
git development version
System:
all
bitness:
64-bit
hardware architecture:
amd64/x86

Description

Here is a test files. http://filebin.net/fw1usqyp2j

gradient.tiff - input image
gradient.tiff.xmp - settings with split toning
gradient_sRGB.tif - output converted image with right colors
gradient_ProPhoto.tif - output converted image with wrong colors

Sorry, I cannot test with latest git version.
Cannot compile it in my Ubuntu 12.04 (incompatible GTK3 version).


Related issues

Related to darktable - Feature #8465: Move soften iop to Lab space...Patch attached

Related to darktable - Bug #10507: Image histogram is affected by display color profileNew06/03/2015

Related to darktable - Bug #9194: Color picker depends on display profileTriaged01/22/2013

History

#1 Updated by Serg N almost 5 years ago

Forget to say. ProPhoto just produce much noticeable color distortion. With other output profiles (except sRGB) there is wrong colors too.

#2 Updated by Serg N almost 5 years ago

Just tested with latest git version. (Compile and install new GTK3)
Same result. Wrong colors.

#3 Updated by Tobias Ellinghaus almost 5 years ago

  • System changed from Ubuntu to all
  • Affected Version changed from 1.6.3 to git development version
  • % Done changed from 0 to 20
  • Status changed from New to Triaged
  • Category changed from General to Darkroom
  • Subject changed from Darktable produce wrong split toning colors while using ProPhoto output profile to Split toning results shouldn't depend on output profile

The reason for what you see is that split toning (like a few other modules) is working in the output color profile space, so the choice you take in "output color profile" affects the result of all modules following it. These modules even give different results for display in darkroom and export. There are plans to change that eventually, but first we have to come up with a satisfying way how to handle it. Move everything to Lab? Convert to one fixed internal RGB space for these modules and do another conversion step to display/output profile in the very end? We don't know yet.

#4 Updated by Roman Lebedev almost 5 years ago

  • Related to Feature #8465: Move soften iop to Lab space... added

#5 Updated by Serg N almost 5 years ago

Maybe there is some workaround for this?
I don't want to always use sRGB output profile.

What is other modules working in same way? I want to know to use it carefully.
Thanks.

#6 Updated by Pascal de Bruijn almost 5 years ago

There is no workaround.

All modules that come after "output color profile" may be affected. You can check by disabling the module grouping, then all the modules are visible in order, applied from the bottom to the top.

Another thing to consider is... are you sure you really need to export to ProPhoto RGB? It's often dogmatically used, while not providing any tangible real-world benefit. In most cases AdobeRGB should suffice, and will likely significantly reduce the practical impact of this particular issue.

#7 Updated by Serg N almost 5 years ago

Pascal de Bruijn wrote:

All modules that come after "output color profile" may be affected. You can check by disabling the module grouping, then all the modules are visible in order, applied from the bottom to the top.

Thanks!

Another thing to consider is... are you sure you really need to export to ProPhoto RGB? It's often dogmatically used, while not providing any tangible real-world benefit. In most cases AdobeRGB should suffice, and will likely significantly reduce the practical impact of this particular issue.

I agree. But AdobeRGB gives wrong colors to. I see it, and can't ignore...

#8 Updated by Serg N almost 5 years ago

Ooops.
Just noticed.
I made a mistake in filenames (sRGB and ProPhoto). Names must be swapped.

#9 Updated by Roman Lebedev over 4 years ago

  • Related to Bug #10507: Image histogram is affected by display color profile added

#10 Updated by Roman Lebedev over 4 years ago

  • Related to Bug #9194: Color picker depends on display profile added

Also available in: Atom PDF

Go to top