Kenneth wrote:
> [...]
> 
> Should assumed_gamma be set to 1.0?  My own short answer is...no. At least
> for Mac and PC users. I realize I'm treading on thin ice here,

Not on thin ice, you are already deep in the water...

What you wrote is full of errors and misconceptions - i could make a 
long list.  But i won't do.  Color handling in computers and color 
perception is a complicated issue.  So you are in good company when not 
fully understanding it.  The POV-Ray docs chapter on gamma correction is 
meant to give a quick insight into what's necessary to set up the gamma 
correction in POV-Ray correctly.  It is not meant as an introducetion 
into color processing at all, it just deals with gamma correction:

http://en.wikipedia.org/wiki/Gamma_correction

nothing more.  It does not say that the results you get when following 
these instructions will be in any way pleasing or appear more 
'realistic' to you than any other settings.

And finally it should be noted that using any value for assumed_gamma 
other than 1.0 or no value at all could lead to trouble with future 
versions of POV-Ray since abuse of gamma correction for tone mapping 
purposes might not be supported any more (you can still set whatever 
gamma factor you want in command line/ini options of course).

Christoph

-- 
POV-Ray tutorials, include files, Landscape of the week:
http://www.imagico.de/ (Last updated 31 Oct. 2005)
MegaPOV with mechanics simulation: http://megapov.inetart.net/

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