Tim Nikias wrote:

> 
> As for the shadow artifacts, I don't use poly-objects that often, and 
> when I do, I usually use tons of polys. However, what might help in this 
> case, is to switch from using an area_light, to scripting a real array 
> of lights. Area_lights still light objects from only a single point, 
> it's just the shadow that gets smoother. With more lightsources, the 
> lighting should become smoother as well. This is, however, somewhat more 
> parsing/tracing intensive, since POV-Ray will have to calculate more 
> lightsources.
> 
There is a little program for generating a "dome" of lights to variable 
degrees of density.  The lights take their color from a surrounding
image map.  It is not so much a "natural" lighting system as it is
a way to get "artistic" control:
http://www.deviantart.com/deviation/49036284/

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