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12-10-2009, 05:39 PM   #1
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A question about some old carl zeiss lens

Hmm well I have a rather particular question and I wasn't sure where to post it... What I was wondering is this: Does anyone know if the Carl Zeiss Pro Tessar 35mm, 150mm, and the Tessar 50mm are m42 mount as I recently ran across them(haven't bought them,yet lol) and was wondering if I could use them with my k20. Iv'e read that the m42 mount was first used in 1949 whereas if my research is correct these lenses were born in the 1950s-60s to use with Contaflex cameras made by Zeiss Ikon. If I'm wrong just correct me how else will I learn! Thank you for your help!

12-10-2009, 07:21 PM   #2
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If they are M42 mount, you can use them on your K20, but you'll need a K to M42 adapter. You can get the genuine Pentax adapter on their webstore.

link----> PentaxWebstore Mount Adapter K(35m m Screwmount to Bayonet)
12-10-2009, 07:32 PM   #3
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Yes what I'm wondering is if anyone on here has any familiarity with any of aforesaid lenses and can tell me if they are m42 mount. I'm aware of the Pentax adapter so thats why I was asking. Thanks.
12-10-2009, 07:42 PM   #4
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Zeiss Pro Tessar lenses for the Contaflex aren't full lenses, and can't be used with other cameras. They are unique supplemental conversion lenses meant to mount onto the removable front element of the 50mm Contaflex mounted Tessars.

12-10-2009, 07:50 PM   #5
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Ah thanks for the info...

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