"Mahalis" <don### [at] fakeycom> wrote in message
news:3c1c8847@news.povray.org...
> Increase max_trace_level in your global_settings block to about 5 or so.

Sorry but I have to correct you on that, 5 is the default.  Three
semitransparent spheres have 6 surfaces for the ray to pass through and so
max_trace_level must be more than the number of instances of surfaces.
I knew what you meant though  :-)

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