I Have a very heavy seen with flip fluids and foam spray and rigid bodies and the elements take very long as it is to render, and im wondering about motion blur.. Iv heard its good to render motion blur in but i dont know how much additional render time this will add. What is the standard workflow? some sort of motion vector pass? or rendering the blur in? which Image plane would i need for a pass to add it in comp?

thanks
-Nick

These threads helped me, I am sure there are more out there,

http://www.sidefx.com/index.php?option=com_forum&Itemid=172&page=viewtopic&p=120454&sid=0d30a71ee87475575a7c7d2a14b8b57c [sidefx.com]

http://forums.odforce.net/index.php?/topic/14062-motion-vector-pass-rsmb/ [forums.odforce.net]

http://forums.odforce.net/index.php?/topic/11401-motion-vectors-buffer/page__p__72963&#entry72963 [forums.odforce.net]

eitht.