BumpCapture node- how do we set it up correctly?

[wacom]

Just trying to get the new bumpcapture node to work...and every time I try to pass the channel on etc. I just get white or nothing at all. It seems the only way to use it is as an output shader- is this correct?

Just wondering if anyone has had any success with it yet. Right now I'm using it to generate normal maps from- anyone know of a node that will generate normal maps via the camera's texture space and take into account depth?

Thank you in advanced-

-g