POV-Ray : Newsgroups : povray.advanced-users : HDR and brightness : Re: HDR and brightness Server Time
21 Jun 2024 01:23:24 EDT (-0400)
  Re: HDR and brightness  
From: Alain
Date: 23 Feb 2018 21:50:30
Message: <5a90d2f6@news.povray.org>
Le 18-02-23 à 13:18, Kenneth a écrit :
> Mike Horvath <mik### [at] gmailcom> wrote:
>> Can I achieve the same brightness using an HDRI sky as using a light
>> source? Or are there limits on how bright a scene can be?
> I haven't yet used an HDRI image/image_map in a scene, but I would assume that
> the maximum rendered brightness on-screen would be clipped to 1.0 (typical
> maximum white)-- or rather, as bright as your monitor can reproduce 1.0, just
> like with any scene.
> The saved file is another matter, if it's saved as HDRI. (POV-Ray can do that,
> right? I haven't read the documentation enough to know.)
Yes, you can save as high dyamic range image. Just need to add +fe 
(*.exr) or +fh (*.hdr) to the command line. Then, there is no clipping.

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