tillmarkwitz Posted January 13, 2019 Share Posted January 13, 2019 Hello community, I am trying to build a focal length adapter for my 645 lenses onto my digital APS-C body. For this I need to get accurate dimensions of the 645 Bayonet lens mount. Any clue where this information could be found? Thanks, Til Link to comment Share on other sites More sharing options...
dan_fromm2 Posted January 13, 2019 Share Posted January 13, 2019 mounts.htm Link to comment Share on other sites More sharing options...
rodeo_joe1 Posted January 13, 2019 Share Posted January 13, 2019 I bought an M645 to Nikon F mount adapter off Ebay for a modest amount. I already had an F mount to Sony E adapter, and F mount to other APS-C cameras are readily available. Stacking adapters isn't ideal, but much more achievable than building one. All the M645 lenses I've tried are excellent, but quite bulky to use on an APS-C camera body. Better suited to a full-frame sensor really. Link to comment Share on other sites More sharing options...
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