Originally posted by Ed Hurst Topace said above: "D-FA isn't quite compatible either. They lack aperture rings, and the 645 film cameras can set aperture electronically if in shutter priority mode, but not otherwise."
Don't the latter film bodies (the N and Nii) have electronic aperture control in the body, making the first variant of this lens fully compatible? Obviously the original 645 film body lacks this...
645N can set the aperture when the lens is in A mode or lack aperture ring, yes. But unless I've missed some controls on my 645N (I didn't read the manual, since the camera's normally so easy to shoot with), it does not have an interface to set it in AV or M mode, only TV or P. It seems that MZ-S has the same problem in small format.
Feel free to correct me if I'm wrong.