Warp schrieb:
>   I have demonstrated this phenomenon here:
> 
> http://warp.povusers.org/povray_gamma_issue/index.html

Which perfectly supports my claim that you should set Display_Gamma and 
File_Gamma according to their technical purpose, not according to your 
artistic taste. Note that with File_Gamma=2.2, all is well with the 
world. On a different system (e.g. Mac), the value where all three look 
the same is likely to be different (and may even require different 
settings for File_Gamma and Display_Gamma, in case the viewing software 
happens to expect TIF files to be pre-corrected for a PC-typical display 
gamma).

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