Bug 393577 - Implement DCP Raw Camera colour profiles from X-Rite colorchecker passport Software - similar to Lightroom/PS
Summary: Implement DCP Raw Camera colour profiles from X-Rite colorchecker passport So...
Status: REPORTED
Alias: None
Product: digikam
Classification: Applications
Component: Plugin-Editor-ColorManagement (show other bugs)
Version: 6.0.0
Platform: Other All
: NOR wishlist
Target Milestone: ---
Assignee: Digikam Developers
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2018-04-27 14:48 UTC by Timothy
Modified: 2022-01-10 07:59 UTC (History)
1 user (show)

See Also:
Latest Commit:
Version Fixed In:
Sentry Crash Report:


Attachments
Profile for 5D and lens no ND (2.88 KB, application/octet-stream)
2018-04-27 14:48 UTC, Timothy
Details

Note You need to log in before you can comment on or make changes to this bug.
Description Timothy 2018-04-27 14:48:02 UTC
Created attachment 112287 [details]
Profile for 5D and lens no ND

I use X-Rite colorchecker passport with Lightroom to calibrate my cameras and lenses so that I can control the colours far more accurately than the built in profiles from both Canon and Adobe. It also removes the colour cast from ND filters amazingly, because it uses a standard colour board to work out how the colours should be. Currently, I have not found any software besides Adobe, that can use these profiles created by the colorchecker software. It is the only real reason that I must stick with Lightroom for now. It would be a very good addition to your software. 

I am happy to aid in the implementation. I have 3 Canon cameras - 40D, 7D & 5D MKIII  - my family have 600D and I have profiled all of them and the lenses/ND filters I use. I can provide you with the profile files to inspect their properties and figure out how they could possibly be implemented. ;-) 

I'm sure there are other users of your software that will have the colorchecker passport that could help as well. :-)

Thank you or your consideration.
Comment 1 caulier.gilles 2018-04-27 16:02:06 UTC
For ExifTool:

DCP	R/W	DNG Camera Profile (DNG-like)	R/W/C	R/W/C	R/W/C	R/W/C

It's a RAW color profile based on DNG.

I tried Exiv2, it cannot decode.

I cannot test with lcms2, the Color Management Engine use in background to process color profile.

I'm not sure if libraw can support it as well. lcms2 is used inside the RAw decoder library to process color management.

I just tried to :

1/ rename your file as icc.
2/ Run editor Raw import tool
3/ In CM section, i setup your profile.

There is no error and no exception generated. On the console all is fine.

So, we must to know if lcms2 support really this kind of profile.

Gilles Caulier