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03-08-2014, 04:22 PM   #1
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Do K-mount lenses fit on 645n?

I've searched the forum, but can't find a definitive K-mount lenses fit on 645n?

03-08-2014, 04:31 PM   #2

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No they do not.
03-08-2014, 04:33 PM   #3
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Thank you filoxophy!
03-08-2014, 06:49 PM   #4
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They don't cover the whole frame, so that's why no adapters exist.

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03-08-2014, 07:01 PM   #5
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As Adam said, they don't cover the whole frame. But the registration distance for the K-mount is 45.46 mm while for the 645 mount it is 70.87 mm. So not only would you get terrible vignetting but, if you could do it, the K-mount lens would have to extend about 25 mm inside the 645 body. I guess that's why there are no adapters!
03-09-2014, 08:36 AM   #6
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Only if you used a reverse adapter for macro work. The 6x7 system had a 49mm adapter so you could use 35mm system lenses for macro work. I beleive the 645 had a 58mm?


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