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01-16-2011, 10:52 AM   #1
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Lens Prod. Date?

Is there a way to figure out the production date of my M-50mm f/1.7 that I purchased used?

01-16-2011, 11:31 AM   #2
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This may not be much help but I understand the "A" series of lenses started about 1982-3.

You can check in the serial number data base and guestimate where in the series your lens sits if the data base has a good number of entries.

I'm not sure when the Pentax M42 mounts ended and the K "M"s started. You might be able to look for the last M42 camera body info.

With the older lenses it is all in quality and condition anyway.
01-16-2011, 03:41 PM   #3
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QuoteOriginally posted by s.randy Quote
Is there a way to figure out the production date of my M-50mm f/1.7 that I purchased used?
With Pentax not the exact date, just the production run, 1977-1984. The closest you would get is via the PF serial number database, the lower the s/n the most likely the oldest year in the run.

M 50/1.7

Phil.
01-16-2011, 05:15 PM   #4
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Some of these were made in Taiwan. Some have a plastic trim ring in front (the ring with the lens name on it). I have always assumed that these lenses were later models; no real data to back that up.

01-17-2011, 09:00 AM   #5
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QuoteOriginally posted by gofour3 Quote
With Pentax not the exact date, just the production run, 1977-1984. The closest you would get is via the PF serial number database, the lower the s/n the most likely the oldest year in the run.

M 50/1.7

Phil.
QuoteOriginally posted by Phil1 Quote
This may not be much help but I understand the "A" series of lenses started about 1982-3.

You can check in the serial number data base and guestimate where in the series your lens sits if the data base has a good number of entries.

I'm not sure when the Pentax M42 mounts ended and the K "M"s started. You might be able to look for the last M42 camera body info.

With the older lenses it is all in quality and condition anyway.
Thanks for the help, I appreciate it!
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