Hi vesta,
about Z-depth, please have a look at this video from the c4doctane dev:
[vimeo]http://www.vimeo.com/201203670[/vimeo]
https://vimeo.com/201203670It's about c4doctane and After Effects, but the principle is the same for Standalone and other plugins.
And here is the general documentation about
Info passes.
About the Beaty passes without DOF, you need to completely remove the DOF effect from your Thin-lens Camera node, by setying at 0 the Aperture or the Aperture Edge value, of by increasing a lot the Fstop value like at 1000.
ciao beppe