How to extract Daz3D "Passes"

in New Users
Hi guys I've seen a YouTube video wherein a guy got the pssss from zbrush. These passes include the shadows, highlights, outlines, etc of the zbrush work then he edited theses passes on photoshop so that it'll look better. I've seen videos of people doing this on daz3d but they haven't really stated on how to get the passes from what I know, so how do you do this? Just please explain it in simple ways as much as possible because I'm a new user also are there any tutorials or threads of techniques in enhancing a daz3d image on photoshop using the passes or just using the exported image of daz3d without the passes. :)
Comments
In Iray you can go to render settings, advanced and then the canvases tab and it will let you do a pass for some of those. Check canvases and then you can add the pass you want to render.
You may want to read through this and other threads on canvasses: http://www.daz3d.com/forums/discussion/62101/relighting-with-iray-canvases/p1