AgentSmith quote and wrote: ++++++++++ "the SINGLE light from outside the room gets bounced from object to object" Unfortunately, the Bryce program and its rendering engine has never, at any time, had that capability. ++++++++++ No 3D renderer has ever, at any time, had that capability. There is no light at all, of any description, in 3D programs. They all, in various ways, simulate the real world process of illumination. It's just algorithms and calculations. Radiosity, photon mapping, surfaces, objects, et al, are just mathematical constructs. There is no spoon. So just because Bryce doesn't have the specific process of 'radiosity', it doesn't mean that it can't simulate the realistic bouncing of light from one surface to another in some other way. That way is True Ambience. pumeco's PRO-RENDER appears to be a very well developed implementation of Bryce5 True Ambience. It isn't a hack, and it isn't a plugin - as he's already explained. I have to say that the reaction by some people to this would provide material for a psychology PhD thesis. pumeco's real 'crime' appears to be that of being outside the 'in crowd'. Happens a lot 'round here, doesn't it? In the final analysis, the only one with anything to lose out of this is pumeco. Cut the guy some slack.