Several of the C components are not those used in Raydream. DOF is one of them. From the way things look, I believe soft shadows and motion blur are others. Carrara is a fusion of Inifini-D, Raydream, and some newer technology. Since this is the case, some of the models which were in Raydream didn't make it over to C for several reasons (legal issues, code integration, etc.). Metacreations did pound some effort into cranking up the rendering time in C compared to Raydream. RDS 5.5 touted a rendering speed improvement on the order of five times faster than RDS 3D. C is on the order of 11 times faster than RDS 3D. I've rendered just a couple of things on RDS 5.5 for the resource CD. While I don't really know detailed factors, RDS is WAY WAY slower! In closing, most people do their DOF in post processing. C just does not cut the mustard on this particular issue. -Kix

-Kix