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serkol
Joined: 26 Aug 2012
Posts: 896
Location: Belarus
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 Posted: Fri Jul 15, 2022 7:26 am Post subject: |
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serkol wrote:
 _FP02439 by serkol64, on Flickr
 _FP02447 by serkol64, on Flickr
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Regards,
Sergey |
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calvin83
Joined: 12 Apr 2009
Posts: 7554
Location: Hong Kong
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| Posted: Fri Jul 15, 2022 8:25 am Post subject: |
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calvin83 wrote:
 
Never see one of this. Must be some kind of prototype!
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The best lens is the one you have with you. |
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eggplant
Joined: 27 May 2020
Posts: 516
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| Posted: Fri Jul 15, 2022 12:44 pm Post subject: |
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eggplant wrote:
My money goes on a Double Gauss lens. |
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serkol
Joined: 26 Aug 2012
Posts: 896
Location: Belarus
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| Posted: Sat Jul 16, 2022 6:10 am Post subject: |
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serkol wrote:
calvin83, thank you!
 _FP02442 by serkol64, on Flickr
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Sergey |
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Paragon19
Joined: 26 Dec 2021
Posts: 45
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| Posted: Sat Aug 06, 2022 12:16 am Post subject: |
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Paragon19 wrote:
I just ran across another post on Reddit (https://www.reddit.com/r/VintageLenses/comments/wh7cg2/what_is_this_etastigmat_100mm_f18/) about an ETA Praha Etastigmat 100mm f/1.8, also from someone wondering where the lens originates.
I don't know all the different applications a lens can be designed for, but I've seen oscilloscope lenses with fast apertures that include an iris. I couldn't find any information about Meopta oscilloscopes, but maybe they made some lenses for another company's scopes? |
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