LOL, maxxxmodelz! OK, some advance renderers can do it. I've never been able to afford them, so havn't been able to try them out:-) But, actually, the principle still holds sound (if a little irrelevant for art-work). Light rays travel (by definition) at the speed of light. And they have the "Computing power" of the universe in which to do it... Ray-tracing (even if it DOES recurse, as opposed to no. of bounces) cannot ever match that.... But it'll get better..eventually. Cheers, Diolma PS. I'm a hobbyist, not a professional..