there are no lights, no skylight, non environment…the light is generate from a cube with glossy refraction and exit color> 0
Is it possible or is it a bug?
thanx
fabrizio
Yep, I’d say this is quite as expected.
Best regards,
Vlado
Now THAT is cool, just what I need for my current project. Best bug I’ve ever seen.
Craig
That is a cool effect.
Craig, I expect to see some sweet curtains form you after this. 
Frabrizio, why do you set your light and dark multipiers so high? I’ve seen others in this forum do the same, but I never understood why.
I tried modifying one of my scenes to see if I could see any advantage in doing this, but I just had to turn down my lighting by a factor of
about 7. The lighting and quality look very similarto the origional. Do rendering times speed up due to lower light multipiers?
Just curious.
I usually use 7 or 8 because I want to light the room without burn the image with hi setting of the lights…but probably there are other way to render 
bye
fabrizio
I used to use high multipliers because I thought being unoriginal and copying Soluto’s settings would work for me. In the end because of the high multiplier, for interior scenes where you look through the glass to a background I found it impossible to make the background image bright enough to match the scene without photoshopping it in. now using 1/1 again with light multipliers much higher than with 7/7 (x7 roughly) and the images look very similar, take roughly the same time to render, backgrounds look better and shadows are slightly more prominant than with 7/7.
I think you would need high mutlipliers to use this method effectively?
Ahh, thanks for the clarification Paulison.
light multipliers much higher than with 7/7 (x7 roughly) and the images look very similar, take roughly the same time to render
this is what I thought was the case.
I didn’t realize the issue with the background.