hey guys,i'm new to H and i don't know hao to render and use image's z-depth map in depth of field cops,since i decide not to use 3d depth of field of mantra render , so…please help me out

on output mantra node in output tab there is “Extra image plane”, hit the plus button on the right and in VEX variable field write Pz (for z-position) or seaech it in the menu… that should do the trick