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Jiaming
Joined: 09 Mar 2016
Posts: 106
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 Posted: Tue Aug 09, 2016 4:34 am Post subject: Identify this Biotar |
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Jiaming wrote:
Hi all,
I just got this CZJ Biotar 58/2, but the the red letter on the name ring seems to be mysterious to me. I know there are red T versions, but I never knew any with this "crossed out" T. Can someone explain what it is?
Hint: armless exa mount, 12 blades (if my eyes are sharp enough), preset aperture, min aperture 22, sn 3702923 (suggesting that it was made between 1952-1955).
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newst
Joined: 21 Oct 2014
Posts: 617
Location: Troy, MI USA
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| Posted: Tue Aug 09, 2016 9:00 am Post subject: |
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newst wrote:
From what I have read this is another artifact of the Jena/Oberkochen trademark wars. Some country decided that Zeiss Jena couldn't use the red T on lenses imported to it so the importer modified the T before putting the lens up for sale.
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Steve
Just an armadillo on the shoulder of the information superhighway. |
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exaklaus
Joined: 11 Aug 2009
Posts: 1633
Location: Niederrhein, Germany
Expire: 2011-12-02
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| Posted: Tue Aug 09, 2016 12:46 pm Post subject: |
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exaklaus wrote:
| newst wrote: |
| From what I have read this is another artifact of the Jena/Oberkochen trademark wars. Some country decided that Zeiss Jena couldn't use the red T on lenses imported to it so the importer modified the T before putting the lens up for sale. |
Yes, that's it.
This altered "T" is sometimes called "Flying kite"
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Jiaming
Joined: 09 Mar 2016
Posts: 106
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| Posted: Tue Aug 09, 2016 1:10 pm Post subject: |
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Jiaming wrote:
Wow, thank you! Yes this is probably the US version. Does that explain? |
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Jiaming
Joined: 09 Mar 2016
Posts: 106
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| Posted: Tue Aug 09, 2016 4:20 pm Post subject: |
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Jiaming wrote:
One more question - I noticed a small amount fungus on the edge of the front element. Is it necessary to give my porn star a surgery (either at home or in hospital), or maybe I just try to sun dry it? |
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alex_KS
Joined: 29 Oct 2015
Posts: 35
Location: Kiev, Ukraine
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| Posted: Wed Aug 10, 2016 3:13 pm Post subject: |
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alex_KS wrote:
| Jiaming wrote: |
| One more question - I noticed a small amount fungus on the edge of the front element. Is it necessary to give my porn star a surgery (either at home or in hospital), or maybe I just try to sun dry it? |
Why not? Best way would be deleting all signs of fungus so It can't more and more square of the lens.
You can try make it by yourself. |
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