Forum: Pentax SLR Lens Discussion
03-07-2009, 10:13 PM
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The MIR that you are talking about was manufactured for the Zenit cameras of the time (primarily). At this time, the Zenits were common in both M-39 screw (Zenit-s, Zenit-3, etc.) and in M-42 screw mounts (the new at the time Zenit-E). It appears that you have the 39 threading. The M-42 lenses are actually more prevalent, and are pleasantly decent, especially for the price. There ARE rings that convert from 39 to 42. I have one. I got it in Russia where they are quite common. I don't know where you could look for one in the US, though. Its not very useful unless dealing with Russian equipment, since virtually nobody else made SLR lenses in 39mm screw. Im sure if you care enough and you gave a machine shop the proper specs, they could make you one from scratch. If it doesn't cost too much, you'll get a nice lens and it will be worth it.
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