Am 25.09.2011 23:59, schrieb Grim Reaper:

> Found this discussion really helpfull. Been wondering for years why POVRay
> output always looks so blown on the white side. Only thing, does anyone know how
> to do the same to an image map? Should you save the file with a linear RGB color
> profile? How would you do this?

For POV-Ray 3.6, you would indeed need to convert image maps to a linear 
RGB color profile (unless you're using "assumed_gamma 2.2"), or convert 
to Radiance HDR and use MegaPOV. To preserve the full dynamic range of 
the original material, I'd recommend using 16 bit per color channel.

With POV-Ray 3.7, and presuming you're using a "#version 3.7" directive, 
most image maps should be fine "as is". PNG files are handled 
automatically (provided they have a proper gAMA and/or sRGB chunk), same 
goes for OpenEXR and Radiance HDR (which are linear by definition); for 
any other files, POV-Ray 3.7 will presume that they're sufficiently 
close to the sRGB profile. In the rare event of POV-Ray 3.7's 
automatisms failing, you can override them by using the "gamma" 
statement in the image_map.

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