[Lcms-user] Gamma within Devicelinked Profiles related with Colorsync

[Kristian K. <kri...@ki...>]

Dear all,

I've a problem with the device link profiles created by lcms, when using
under ColorSync. It looks like by using the device linked profile (8 or 16
Bit) adds a gamma on the Bitmap (8Bit). I use the way discribed in the
"icclink.c" file, just saving the profile to mem.

I open the Profile with CMOpenProfile and use CWConcatColorWorld to create
the ColorWorld (Transformation). When this ColorWorld is used on the
Bitmap, the Image is brighten. Cause I do this two time on the Image (kind
of Softproof), the Image looks very bright.
If I use a ColorWorld (two in this case) fully gernerated out of the
source Profiles, no additional gamma is calculated on the Images, so it
looks like the devicelink Profile has something like it in itself.

Is there a way to limit this gamma to 1.0 (so no gamma is done) ?

Thanks,

Kristian Kratzenstein
Gettorf

Kristian.Kratzenstein@KielNET.net
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