HI guys ihave amamiya rz67 pro mk1 i want to buy a viewfinder there are to types one with dials on top the other one with dials on the right hand side the one with dials on the side has full f/stops the one with dials on top has half f/stops which one do i need the mamiya pro1 only has full stops can i use anyone of the viewfinders on rz67 pro1 ment thanksSTEVEP51