Some Mamiya medium format lenses are not compatible with contemporary \"small format\" DSLR bodies. The M645 series includes leaf shutter (LS) lenses that are designed to synchronize with the focal plane shutter in the M645 camera, and so can\'t work with a DSLR. Most new 645AF and 645AFD lenses do not have a manual aperture ring (including a version of the Mamiya A 120/4 Macro, called \"645AF Macro MF 120mmF4\"). The RB67 and RZ67 are 6x7 SLR bodies and their lenses are compatible, except for maybe some LS versions; however, it\'s possible that these lenses for the larger 6x7 format do not resolve as well as the smaller 645 format (I have no personal experience here). The Mamiya 6, 7 and 7 II cameras are 6x7 rangefinders, and their lense are not compatible, AFAIK.
The M645 system includes the following leaf shutter (LS) lenses: 55/2.8, 70/2.8, 80/2.8, and 150/3.8, and so there are LS and non-LS versions of the M645 55/2.8 and 80/2.8 lenses. The name on the lens includes an \"L\" to show that it\'s a leaf shutter version. For example, I once owned the \"Mamiya-Sekor 645 C 80/2.8 N/L\".
Here\'s a preliminary list of Mamiya medium format series lens compatibility.
M645 or 645
- 645 format SLR
- register = 63.3mm
- manual focus
- most lenses are compatible (best choice, IMO)
- includes \"C\", \"S\", \"N\" and \"A\" lens series
- leaf shutter (LS) lenses are not compatible, incl. 55/2.8, 70/2.8, 80/2.8 and 150/3.8
- non-LS versions of 55/2.8 and 80/2.8 are common (and very good)
645AF, 645AFD, 645DF
- 645 format SLR
- register = 63.3mm
- autofocus
- most lenses not compatible (no manual aperture ring)
RB67, RZ67
- 6x7 format SLR
- register = 105mm (RZ), 112mm (RB)
- manual focus ,
- most lenses are compatible
