POV-Ray : Newsgroups : povray.beta-test : PNG output much brighter than preview... : Re: PNG output much brighter than preview... Server Time
20 Apr 2024 05:10:06 EDT (-0400)
  Re: PNG output much brighter than preview...  
From: Trevor G Quayle
Date: 15 Jan 2007 09:25:01
Message: <web.45ab8e418a3ae007c150d4c10@news.povray.org>
"Rarius" <rar### [at] rariuscouk> wrote:
> I should have remembered the assumed_gamma issue before posting this... but
> on the other hand, why does this only cause a problem for the PNG output but
> not the BMP or TGA? And why does the render window look OK while the file
> doesn't?

Because PNG stores a gamma setting and certain viewers use it.  I usually
render in PNG and convert to JPG.  When I open the PNG in the basic Windows
Picture and Fax Viewer or Picasa, it is bright (ie uses the internal gamma
setting), but in Microsoft Photo Editor, it isn't (doesn't use the
setting).  I would suspect that the POV preview displays without the gamma.
 And remember, there are 2 gamma settings, Display_gamma in the ini and
assumed_gamma in the scene file.

Personally, I can never get it to work right (or at least the way I want it
to work)

-tgq


Post a reply to this message

Copyright 2003-2023 Persistence of Vision Raytracer Pty. Ltd.