POV-Ray : Newsgroups : povray.advanced-users : Why assumed_gamma 1.0 should be used (and the drawbacks) : Re: Why assumed_gamma 1.0 should be used (and the drawbacks) Server Time
28 Sep 2024 19:00:17 EDT (-0400)
  Re: Why assumed_gamma 1.0 should be used (and the drawbacks)  
From: Patrick Elliott
Date: 18 Sep 2011 18:15:07
Message: <4e766d6b$1@news.povray.org>
On 9/18/2011 9:24 AM, Warp wrote:
>    It becomes even more complicated when you consider that combinations of
> different wavelengths may look the same to the human eye, yet may have
> different physical properties (eg. when reflecting from surfaces).
>
Can get really weird in some cases. Last night I was fiddling with a new 
saber I finally got wired, with mostly only light from my computer 
display in the room. When I passed this "blue" light over a cutter I had 
the thing looked almost florescence orange (its actually high visibility 
green), an old, actually orange, gatoraid container, which I use for 
storing parts, looked dark red. Now, the later I can grasp... But the 
former seems to deny common sense about how color reflection works. 
Note, the area the two items where in got barely enough light from the 
computer to "see" them, weakly, so, how the hell do you get bright 
orange out of yellow-green, when using a blue light? o.O


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