Nikon-Adobe RGB icm as input profile

[Beep6581]

Originally reported on Google Code with ID 2352

RT crashed on save several times when I used the attached Nikon-Adobe RGB icm as the
input profile, Adobe RGB as the working profile and RT_sRGB as the output profile.
No problem when input profile id Adobe RGB, so not a critical issue.

Branch: default
Version: 4.0.12.132
Changeset: b57505ee9c6d
Compiler: gcc 4.7.1
Processor: generic x86
System: Windows
Bit depth: 64 bits
Gtkmm: V2.22.0
Build type: Release
Build flags: -m64 -mwin32 -mthreads -msse -msse2 -mtune=generic -fopenmp -Werror=unknown-pragmas
-mwindows -DNDEBUG -O3
Link flags: -mwin32 -mthreads -static-libgcc  -mtune=generic -mwindows -s -O3
OpenMP support: ON
MMAP support: ON

Reported by funkenbeachin on 2014-04-21 11:08:24

[Beep6581]

I reread RT manual 4012 and now think I ought to be using the Camera Standard input
profile and ProPhoto working profile.  I'm ready to delete this issue.  Still some
question in my mind about which profile I should use on the camera.  I assume dcraw
in RT detects use of the Adobe profile on the camera?  

Reported by funkenbeachin on 2014-04-21 11:54:58

[Beep6581]

All *adobergb.icm (or icc) srgb.icc prophoto.icc etc are output profiles and they are
totally unsuitable for use as input profiles. Except that they are only suitable for
general use as output profiles, they have no resemblance on the camera's response to
colors (which is the input profiles job ie to describe one camera's response to color)
and the worst thing is that they include gamma encoding (it's gamma 2.2 for your NKadobe.icm)
for the data while a raw converter needs (and expects) linear data so the rendering
they give is very wrong.

You should use the camera standard or for better results a dcp or icc/icm profile built
for your camera. Which is your camera BTW ?.

RT and all raw converters do not need to use the camera's output profile (adobergb
or srgb) and they don't .. They only need an input profile ..  

Reported by iliasgiarimis on 2014-04-21 20:03:54

• Status changed: Invalid

[Beep6581]

D-90.  Does a camera setting for adobe color space make a difference or
matter at all?

Stop Watching Us!

Reported by funkenbeachin on 2014-04-21 20:51:54

[Beep6581]

Of course not if you are shooting raw files.

Reported by michaelezra000 on 2014-04-21 21:43:55

[Beep6581]

That makes sense, thanks.  Is there anything else I've been stubbornly
stupid about???

Reported by funkenbeachin on 2014-04-21 22:40:44

[Beep6581]

The RawTherapee 4.0.12 Manual is obsolete, outdated, kaput. Read RawPedia to get current
and valid information on Rawtherapee: http://rawpedia.rawtherapee.com/

Reported by entertheyoni on 2014-04-22 08:05:21