"Thomas Lake" <tla### [at] homecom> wrote in message
news:3b5bb552$1@news.povray.org...
> > Never did have the patience myself to play with rad!
>
> Yeah it can really eat up a lot of your time! I was wondering if I am
> experiencing the same slowdown that some of the others have commented on
> with the combo of area light + ior + rad??
Heck, just point light source + ior + radiosity in a scene of a screened
room I'm doing right now is increasing render-time much more than I would
have expected. I have caustics 1 used here, not photons (yet).
Actually, I had other objects (semitransparent people for scale) using ior
but what caused the slowdown is a several roof panels (corrugated
fiberglass) with a 2-layer texture. I think it's more related to AA of
those in my case.
Bob H.
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