Thanks for all the informative replies. It seems that that the Leaf adapter kit is the best solutions, since it includes everything to hook up the back, includes the screen, has a rotating plate, and can be fitted on any generation of the RZ67.
So far I found three solutions:
- Leaf adapter kit which includes plate, cables and focusing screen (or mask). Can be fitted on all generations of the RZ. I think this is the only rotating plate.
- The Mamiya plate is the same price as the above kit. The focusing screen with crop lines is extra, and so are the cables for earlier RZ. Plate does not rotate.
- Phase One adapter kit comes with plate, cable and mask. Plate does not rotate. More info above.
Thanks again for your help. Gilles