Ya, I actually tried working with the MR DOF lens and it worked great, but took about a 100 times longer b/c I had to also increase AA way up.
I'm not used to rendering in passes (I know I should become familiar with it so why not now?) I looked it up and see that I have several choices but not Depth. How do I render a depth pass?
"Please excuse the crudity of this model, I didn’t have time to build it to scale or to paint it"
:: Dr. Emmett Brown