"Johan Feyaerts" <joh### [at] nospamhotmailcom> wrote in message
news:45bb72b8@news.povray.org...
> yep that seems to work.
> I don't really get why the trace level needs to increase when there is a
> transparent layer around the shiny finish,but anyhow problem  is solved
now.

Max trace is the amount of objects that the light ray is allowed to
reflect/pass through before it returns the colour as black. With you putting
a transparent layer around each ball, you've doubled the number of
interactions (once for the transparent layer, once for the reflection)

I've got a scene that uses trees with alpha-mapped transparency and water
and because of those two, I need a max trace of about 90. If I remove the
trees, it's more like 10. If I remove the water, it's somewhere around 40.

Post a reply to this message