I'm doing an image at the moment which has ray depth set to 50 and TIR set to 20. So far it has taken 2 days and it's still going although I don't think it will be much longer. I must say that when I've stopped it to save, just in case my cat pulls the plug out again, it looks really good, even if I do say so myself. Another reason for the time is that it is at a size of 4000x3000. 8) Catlin