POV-Ray : Newsgroups : povray.general : difference in lighting between 3.6 and 3.7 : Re: difference in lighting between 3.6 and 3.7 Server Time
29 Jul 2024 18:23:34 EDT (-0400)
  Re: difference in lighting between 3.6 and 3.7  
From: clipka
Date: 19 Nov 2010 12:45:33
Message: <4ce6b7bd$1@news.povray.org>
Am 08.11.2010 17:33, schrieb Alain:

> If you output to PNG, the file is writen using a linear space end gets a
> gamma chunk with the proper gamma information.

That's not really true; in 3.7, PNG is written with gamma encoding by 
default, too (depending on an ini file setting)- but you won't see any 
difference in brightness compared to linear encoding in most image 
viewers, because indeed gamma information is written to the file header.

BTW it's not even a good idea to use linear encoding for PNG, as it is 
more prone to banding artifacts (unless you use an unconventionally high 
bit depth), and may also look different than intended with a few image 
viewers that ignore the gamma information in the PNG header.


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