431d3d4c$1@news.povray.org...
> bp wrote:
>> also, it's possible that scene ambience + object ambience maybe adding 
>> unwanted energy to the scene (especially at the corners of the room)
>> benp
>
> Thanks ben, I've removed any ambient light from everything so it can't be 
> that ..

What Tim said. This setup is just too hard to handle for radiosity because 
there's not enough light. For it to work, it would require extremely 
high-quality, impractical parameters to get both good results without 
artifacts.
If you don't want to change your basic setup, one possibility would be to 
add to the scene, hidden from the view, a bright object like a flat box or a 
square mesh or disc with ambient 1 or more (playing the part of a soft box 
in photography) to generate more light inside the room, the risk being that 
this object could also illuminate other parts of the scene.

G.

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