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03-04-2011, 04:12 AM   #1
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Question for 500mm Takumar owners

What is the minimum aperture of your lens?

I have a 500/5 Takumar (s/n 1700xx) that has a minimum aperture of f22. I also have a 500/4.5 Takumar (s/n 27950xx) that has a minimum aperture of f45. However at various times I have seen pictures of a 500/5 with a minimum aperture of f45 and a 500/4.5 with a minimum aperture of f22 so I'm wondering whether there were multiple variations of both lenses (apart from the Asahiflex version of the 500/5). Looking in the lens database there seems to be an earlier range of serial numbers for the 500/4.5 Takumar, so it does seem possible.

Would anyone like to chime in with the configuration of their 500 and the serial number range?

03-04-2011, 09:38 PM   #2
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Takumar 500/4.5 M42 f/45

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aperture, f22, f45, k-mount, lens, pentax lens, range, s/n, slr lens, takumar
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