When using high AA samples (which is necessary for DOF or motion blur) I believe you can pretty much keep diffuse samples down to 1 or 2. You have to oversample a lot for the DOF, and this AA oversampling takes care of diffuse areas as well. Also, for this scene with the large windows you may get away with 2 or 3 bounces.
On Thu, Feb 14, 2013 at 8:26 PM, Toonafish <ron...@toonafish.nl> wrote: > scene file : https://dl.dropbox.com/u/4271217/Arnold_Classroom.rar > > I'm rendering on a 6 core i7 3930 overclocked to 4 Ghz, so Arnold is using > 12 threads. With AA set lower the DOF is very noisy. But you're right, > maybe I could lower the diffuse samples a little. > > - Ronald > >