z pass help

So I’m trying to learn this Z pass Depth compositing tutorial on Videocopilot, http://www.videocopilot.net/tutorial/depth_compositing/

I’m trying to export z-pass renders of my scene by just checking the ‘z’ in the scene passes window in Blender. Once rendered I just get a solid white photo. I feel like this isn’t right.

Oh and I’m doing this in cycles.

Connect the z output to a Vector / Normalize or a Vector / Map Value node

Aces! Thanks Richard!