Quote Originally Posted by michaelbsc View Post
It is an RZ lens. Can it work on the RB body? Or does it require the electronics to work properly?

I've got an RB body. Sure would be nice to get it spiffy and working.
Sorry, you can't use an RZ lens on an RB body. The RZ lenses require electronics, and the shutter speed control is on a knob on the RZ body.
You can use RB lenses on an RZ body though. Mamiya recommends an adapter of some kind, but I've mounted them straight on with no adapter. I think the adapter "ensures a tighter fit" or something like that, but I've never had any problems.