I need in a still scene a heavy blured background but the rest of scene to remain sharp. So the classical DOF with a Defocus node don’t work in this case. So only two “areas”, one with no blur and one (the background) with big blur.
It’s possible to obtain that with only one render? (not to render the background, blur it in Gimp then import the image and render again)
An idea: it’s possible to use separate DoF nodes for foreground and background?