In article <3D6289DE.A0A75FA6@luxlab.com>, Kari Kivisalo wrote:
> 
> fade_power 2 makes it behave less strange. Without it the source's
> energy output increases with distance.

Exactly. I observed this too, but forgotten to mention in
the first post.

I expetemented with various fade_powers and adding explicit
absrorption to the media, but it's quite hard to make some
realistic effect, moreover a small change in scattering
value changes the light a much. (After all, I had to use
emitting media with some precomputed density maps to fake
glow around light sources in my scene, instead of letting
povray to actually compute them.)

However, there's a probably a workaround: use CSG to cut
a small spehre (or whatever) just around the light source
from the media-container object to get it ``outside''.

Nevertheless I think it's a bug which should be fixed,
though it will surely break some scenes, making them too
dark ;-(

Yeti

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