Good point. There were a few leaf shutter Mamyia lenses, weren't there? 55mm f/2.8 N, 80mm f/2.8 N, 150mm f/3.8 N, 70mm f/2.8 C L/S ? But how are we going to get the adapter to allow tripping of the shutter? How does it get wound? Arg.
Jim
Hmmm, that could work..... there is a Hasselblad V adapter for H mount, so there has to be some way of doing this. The V lenses have their own shutter. It would get down to whether the integration of that adapter is purely mechanical, or has some electrical components to trigger the shutter. I think the main problem is I am not sure how the H body would react not having a lens on it, would the mirror even raise? Something you could do, is if those m645 lenses can be triggered via a cable or release, set a long exposure on the h3d, like 1 sec, and if you can indeed fire the h3d body, is fire it and press the release for the lens in between. It would be a really inconvenient way of doing it.. but could be possible if you are dead set on it.
However, the ideal situation would to be able to have the lens trigger the hasselblad. Like, if it had a flash/sync port on the lens, you could put a cord in it and into the remote release port on the h3d body. I am guessing, when you activate the shutter on the lens, which I am not sure how you would do, it would trigger h3d body to expose just like a cable release would.