In article <39EDC0F6.9E6AFC2B@hotmail.com>, Tor Olav Kristensen 
<tor### [at] hotmailcom> wrote:

> After studying the image, I have now found that there seems to
> bee some problems with this rendering: Some of the spheres are
> not completely round and some "false" odd shaped shadows
> appear.

In addition to the things mentioned by others(max_gradient, 
discontinuous functions...), you may be finding too few intersections. 
Try raising max_trace...maybe use "max_trace all_intersections". (going 
from memory here...I have never actually used this feature)

-- 
Christopher James Huff
Personal: chr### [at] maccom, http://homepage.mac.com/chrishuff/
TAG: chr### [at] tagpovrayorg, http://tag.povray.org/

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