POV-Ray : Newsgroups : povray.binaries.tutorials : Making matte/shadow-textures in instant-compositings : Re: Making matte/shadow-textures in instant-compositings Server Time
7 Jun 2023 01:24:16 EDT (-0400)
  Re: Making matte/shadow-textures in instant-compositings  
From: clipka
Date: 13 Jan 2009 08:30:01
Message: <web.496c964cdf70e042f15adb2a0@news.povray.org>
"H. Karsten" <h-karsten()web.de> wrote:
> By the way: don't confuse the chrome-map with HDRs the one has nothing to do
> with the other.

Well, they have, insofar as they are often combined ;)

They're then often called "HDR light probes" - but H. Karsten is right in that
there are indeed "light probes" which are not HDR at all (bad choice if I'm
asked), and there are HDR images that have nothing to do with light probes.

The reason why light probes and HDR usually go tother hand in hand is that a HDR
light probe still gives very good results if your reflective object happens to
be only somewhat reflective, while standard 8-bit file formats have some
disadvantages in these cases. They're much easier to produce with a digicam
though, and if you need something other than plain chrome for your rendered
object, you may think about using a sphere made of just the desired material.

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