@headoff mind sharing your settings for extreme DOF ? or is it all done in post?
I find it really really hard to get rid of extreme noise when using f-stop of 2, while having things like couch/curtains in the background.
I don't know if I need to crank the internal res up or what to adjust anymore, none of it really seems to fix the problem, even after 150-200 passes its still veeeery noisy and grainy.
Cheers