4722f06c@news.povray.org...
> Many of the global illumination (radiosity) scenes had posted times
> over 12 hours, when I'm sure equivalent scenes in POV would
> render in less time (usually) and not be grainy.

The problem being that doing equivalent scenes in POV-Ray (particularly 
interior scenes) is, from a practical point of view, impossible. Light 
sources in POV-Ray are much too primitive for that, there's no support for 
true area lights or good-looking blurred reflections and while there are 
situations where it's more or less possible to simulate this (using various 
tricks), in most cases it just doesn't work. Jaime is probably the POV-Ray 
artist who has done the most research in that, and his best results, 
impressive as they are from a POV-Ray perspective, are just not in same 
league and are plagued with radiosity artifacts and area light graininess.
http://www.ignorancia.org/en/index.php?page=Modern_interior

Even with the grain, the quality of the illumination in unbiaised renderers 
is unparalleled, simply because there's no cheating involved.

G.

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