Basic differences are...
RB was the original 6x7 body with no 6x8 option on the revolving adapter.
ProS had better mirror mech, better interlock on the backs and an it could take the 6x8 backs.
The SD had a wider lens mount, smoother mirror action.
The RZ pro2 has an improved focus,half stop speeds, updated circuit, updated roll film holder.
These are the basic differences. If you need to know more, the best idea is to talk to the service dept on 01782 753345 or tech support on 01782 753330

By Duncan Evans on Friday, October 04, 2002 - 11:52 am:

Can anyone tell me what the difference between all these versions of the camera are? Also, what's the difference between an RZ67 and RZ Pro II. Finally, has anyone got any of these they are looking to sell?