Quote - I was having problems with DOF in PP2012 too. The attached image is the result of using the DoF guide and the information from hborre about the pixel sampling. When I changed the sampling from 6 to 12 it made a huge difference. Yes, it took more time but was well worth it.

What does change if you increase the pixel sampling?

Here you can see my first render with DOF (Focus on the robot behind).

http://www.renderosity.com/mod/gallery/index.php?image_id=2305443

I think next time i will change the fStop value in the camera settings so that the objects in the foreground will be a little bit more out of focus.

What do you think?