Warp schrieb:
>   Btw, if I load a jpeg image as an image_map to an object with diffuse 0
> and ambient 1, the image will look way too bright and washed out, completely
> different than when I look at the image with any other program.
> 
>   If I write an "assumed_gamma 2.2" in the global_settings block, pov3.7
> will warn me, but now the image will look correct.
> 
>   So what is the *proper* way to tell pov3.7 how it should assume colors
> (eg. in image maps) to be gamma-corrected?

I just went back to this post, to find that I misunderstood.

Yes, POV-Ray /definitely/ has a problem with gamma of input files. PNG 
files with a gAMA chunk are allegedly safe, and HDR files as well from 
my experience (OpenEXR probably too), but just about everything else is 
currently bogus, due to POV-Ray not taking into account any color 
management metadata.

My suggestion would be to (A) fix the standard handling to respect at 
least standard color profiles, and (B) provide a means to override the 
assumed gamma pre-correction on a per-file basis.

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