Very interesting test, Charles, very good idea, and thanks to share with us ! I'm sure Vue can do the same very good quality as others code : main problem is the comparison on time rendering, since I saw many images (with radiosity or global immumination technique) with rendering time less than 1h. Anybody here has the possibility to compare different codes for the same simple render ? It could be very useful... One important question for me is how to compare "ultra mode which is much better than final, but could be of better quality compared to "user settings" with 25 subrays and best settings. I'm sure these two modes are very different (I only have Vue2.1), but I have not made tests to compare them. "Ultra" is sufficient in quality for most of renders. I also hope this discussion will continue (as well as new tests will be performed), cause the problem of rendering quality versus rendering time is not so clear ! :=) Yves