In article <3a469144@news.povray.org>, "Tom Melly" <tom### [at] tomandlucouk> 
wrote:

> The media seems to work in layers and what you're seeing is the
> staggered image of the stained glass at discrete intervals.

You need to either use more samples or add jitter to the samples. Adding 
jitter will break up the patterns, but will make things noisier.
Putting transparent, hollow planes or boxes in front and behind the beam 
of light should also help, since it will force POV to make a new 
interval at each surface. This actually might be the best workaround, 
since it puts the additional samples right where you need them, but it 
requires you to know where the light beam is..

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

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