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07-14-2016, 03:30 PM   #16
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Unfortunately, the Mamiya Sekor ES is not the same registered distance as the m42 mount, much like the Konica mount, it is not easy to convert and use it on the Pentax k-mount camera.

Only the m42 (screw mount) lens would work on the Pentax k-mount with proper m42-to=k mount adaptor.


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