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Forum: Pentax DSLR Discussion
01-10-2009, 08:18 AM
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Unless things have changed I think it is unlikely you can use the original Asahiflex lenses. They had a proprietry narrower mount than the M42 mount developed for the Zeiss Contax S in (I think) about 1949. I don't know of any commercially made adaptors. You should, however, be able to use Zeiss or Pentacon/Praktica M42 lenses. I suspect the earliest Asahi lens you will be able to use will be from the original Asahi Pentax of 1957. The alternative might be to adapt a K-mount body cap to use as a mount for Asahiflex lenses.
I also believe (though Nikon fans keep quiet about it) that Asahi Optical made some of the first lenses used by Nippon Kōgaku Kōgyō Kabushikigaisha on their early cameras.
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