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Jellby wrote:
| What I don't quite understand is why the number of samples has so much
| effect over the overall brightness of the media (I'm thinking of dense
| scattering media to simulate SSS). Sure, the sample number should
affect
| the quality and presence of possible artifacts, but why is "samples
15" so
| much brighter than "samples 75" (method 3, intervals 1)? Is this
maybe due
| to some bad coding on my part?
|
	That's because the darkening you see is an artefact :) It's due to
the fact that when you don't take many samples, a lot of them
proportionnaly get taken deep inside the media where it's dark.
Increasing the number of samples ensures that more and more get taken
in the thin layer near the surface where the SSS effect occurs which
leads POV to notice that the result should be bright. BTW, you
shouldn't increase the number of samples too much. Instead you should
increase the aa_level and possibly decrease the aa_threshold. This
will ensure that the additional samples get taken in places where
they will have a useful impact on the result.

		Jerome

- --
******************************
*      Jerome M. Berger      *
* mailto:jbe### [at] ifrancecom *
*  http://jeberger.free.fr/  *
******************************
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