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06-06-2020, 06:34 AM   #1

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Development of the Pentax/Takumar 50/f1.4

Gday all,

I was wondering if someone can suggest a resource that looks into the design history of Pentax 50/f1.4?

Specifically Im interested in the development of the 7/6 design from Super Takumar through to the FA - changes to the optical design, glass, coatings and so on...

Everything Ive found online eventually comes down to speculation. It would be grand to find a well researched and referenced source, if such a thing exists!


06-06-2020, 06:58 AM - 1 Like   #2
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If you want well researched I suspect that being able to read technical Japanese might be helpful, although there are a lot of folks here who have found information on the development of many classic lenses and a lot more modern ones. (Thanks internet!) I know there are a number of optical engineers who frequent the forums, a PM to one or several may help if there are no responses n this thread.
06-06-2020, 10:20 AM   #3
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Not exactly what you're looking for, and you may very well have found it, but if not, this is a site with lots of good information that may help you piece bits together:

The K-Mount Page | Information about Pentax technology
06-06-2020, 10:49 AM   #4
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"The Ultimate Asahi Pentax Screw Mount Guide" has always been a good reference. If you can find a copy.

06-06-2020, 11:55 AM   #5
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QuoteOriginally posted by jatrax Quote
"The Ultimate Asahi Pentax Screw Mount Guide" has always been a good reference. If you can find a copy.
There are four available used on Amazon.

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