POV-Ray : Newsgroups : povray.binaries.images : assumed_gamma makes a lemon out of U and my orange : Re: assumed_gamma makes a lemon out of U and my orange Server Time
8 Aug 2024 06:18:52 EDT (-0400)
  Re: assumed_gamma makes a lemon out of U and my orange  
From: scott
Date: 15 Nov 2005 14:31:52
Message: <437a37a8$1@news.povray.org>
> Note of doom 1: chances are, the source image will probably be
> converted from a PNG to a JPEG by a news server or blog site.
> Doing that will either adjust it for a 2.2 display or drop the
> gamma altogether, leaving it suitable only for the creator's
> display.  To test this, I have attached a POV render of the
> following scene.  The image gamma is an obscene 30, which has
> caused all the 128/255 colour values to be elevated to 249/255.
> When viewed in a gamma-aware viewer, the "outside" three squares
> are much darker than the inside three, and the bottom right
> quadrant is more orange than yellow.

Rather amusingly, Outlook Express displays it as intended, and PaintShopPro 
screws it up :-)


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