That will be a very nice tutorial : put ambient light setting to a very small amount... I'm interested to read your tutorial ; how do you deal with the light replacing ambient? ;=) I didn't know someone was interested by this kind of stuff among Vue user. Recently I posted a thread here, but I made a big mistake, saying "put ambient to maximum" ; hehehe ! Always learning and learning, experiment after experiment, but never satisfied with results concerning the light ;=) Yves