"Alain" <aze### [at] qwertyorg> schreef in bericht 
news:4c98f8af$1@news.povray.org...
> When light goes through a glass, it get spread out exept for the light 
> that goes through the thick base. And even then, given the shape of the 
> inside of your glasses, it get's a fair amount of spreading.
>
> In the non-photons version, light goes straight through the glass without 
> any deviation.
>
> Do you also use radiosity for that scene?

Yes, I use also radiosity.

This is possibly a difficult glass object to use photons with (from Ingo 
Jansen's grenadine.pov). One thing I noticed when I decreased the spacing 
parameter beyond a rather low value, was that the entire image became black.

Is there a way to get *better* results? For the glasses I used collect on, 
with same results as with collect off for instance, and I switched 
reflection off keeping only refraction on (also in the light block).

Thomas

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