Workflow for post processed Depth of Field and Motion Blur

From here: http://forums.newtek.com/showthread.php?128704-Workflow-for-post-processed-Depth-of-Field-and-Motion-Blur

Do NOT apply DoF blur to the motion vector pass if you're using AE. The DoF has already been applied to the beauty pass layer within the precomp. 

You may find you also have to precomp the depth pass for it to be used properly.

COMP

-> Motion Vector pass

-> Precomp_beauty +RSMB

___|-> Beauty pass +Lenscare or other DOF effect

___|-> Precomp_depth

______ |-> Depth pass

Beauty pass with depth and then a separately saved motion vector pass (as Celshader describes here: http://64.62.198.35/showthread.php?t=127783&page=2). The beauty pass goes in a precomp with lenscare using the DOF from the depth pass. Then RSMB is applied to the precomp taking the motion vector info from the motion vector pass (though sometimes you can just fudge it with RSMB without bothering with the motion vectors and depending on the shot it'll look ok). That or lots of separate render passes for objects for more control.