Depth of field and Zdepth

Finally managed to get a Zdepth pass working with a script from this wonderful person who wrote a .mel script specifically for use with Maya and Renderman.  The script preserves the displacement (wow, so rare) but unfortunately not the alpha.  With some tweaking I managed to get a working zDepth map that has both, so now I can control the brightness values of my images.

Chinese paintings typically show background elements blurrier and more washed out.  With my Zdepth map I can manage the washed out effect, and by adding depth of field to my camera, I can acheive blur.

Zdepth pass with DOF

Color pass with DOF and Zdepth mask