An easy way to fix this is to add these to the end of your master POVRAY.INI 
file

; Picture brightness
Display_Gamma=1
File_Gamma=1

For me the only setting that makes "normal" looking pictures is 1.0, higher 
values look to bright/washed out.

Sorry if you don't agree but it works best for me...

"Sven Geier" <.sven.at.sgeier.dot.net.nospamplease> wrote in message 
news:web.49089f15440ec5fc5b4449250@news.povray.org...
> SO how does gamma work in POV these days?
>
> When I try to use global_settings {assumed_gamma ...} I get an error 
> message
> telling me that this will not work any more and directing me to the
> documentation. The documentation, however, touts Display_gamma and 
> [quote]"the
> new assumed_gamma global setting"[end quote].
>
> I can state confidently that the gamma that is actually put into my 
> renders is
> way too high -- every image I create is very bright with very little 
> contrast.
>
> None of the ini-files I can find has Display_gamma set so this should 
> default to
> 2.2 (according to the documentation) which is about right judging from the
> greyscale chart in the docs. I manually correct the images after-the-fact 
> in a
> graphics program (PhotoStudio 5.5 in case that matters) and they look 
> about
> right when I reduce gamma to about 50%.
>
> (This is 3.7b29 - I've been following every beta since 3.6;
>  Win2k3, but I get the same effect on my XP and S.08 boxes)
>
>

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