POV-Ray : Newsgroups : povray.binaries.images : brightness adjustment : Re: brightness adjustment Server Time
6 Aug 2024 14:21:11 EDT (-0400)
  Re: brightness adjustment  
From: Agustin Britait Molina
Date: 12 Dec 2006 01:20:01
Message: <web.457e493c7cc2e53abcfbcae20@news.povray.org>
try with

global_settings {
  assumed_gamma 2.2
}

in the top of ur code

greeting for all is my first post in the list

"Di Gama" <di.### [at] gmailcom> wrote:
> I am working on a POV-Ray project which involves loading an external image
> and re-displaying it with no color adjustment. I recently discovered that
> "ambient 1" with no light_sources is not enough; the picture comes out
> brighter than the original. I traced the problem to the picture below. The
> top band is POV-Ray's rendering of a smooth gradient black to white at
> ambient 1 with no light_sources. The bottom band is an unmodified gradient
> black to white made by Fireworks. I hold in doubt neither gradient, and I
> think the problem lies in how the object color is transformed into a final
> pixel color. What is going on, and how can I disable or counter this
> change?


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