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pd1987
Joined: 08 Dec 2013
Posts: 74
Location: Poland
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 Posted: Thu Dec 26, 2013 6:55 pm Post subject: Carl Zeiss Jena 200/2.1 "Proj. Objektiv" |
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pd1987 wrote:
Fellows!
I've found today something like this:
It's supposed to have a M100 mount, whatever it is.
Does anyone can tell if this is a complete lens or just a front element? It looks rather unusual and "thin".
I've found out that some projection lenses might be great for photography, but this one looks really weird.
Any info highly appreciated!
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Attila
Joined: 24 Feb 2007
Posts: 57853
Location: Hungary
Expire: 2025-11-18
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| Posted: Thu Dec 26, 2013 8:41 pm Post subject: |
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Attila wrote:
First one what I seen , no idea really, rather part than ready to use lens.
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bernhardas
Joined: 01 Jan 2013
Posts: 1432
Expire: 2017-05-23
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| Posted: Fri Dec 27, 2013 11:31 am Post subject: |
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bernhardas wrote:
Edited
Last edited by bernhardas on Tue Apr 26, 2016 11:00 am; edited 1 time in total |
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nukemall
Joined: 24 Apr 2012
Posts: 96
Location: Blagoveschensk, Russia
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| Posted: Fri Dec 27, 2013 11:36 am Post subject: |
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nukemall wrote:
It's just a front element.
Complete lens looks like this:
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duckrider
Joined: 11 Dec 2013
Posts: 437
Location: Germany
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pd1987
Joined: 08 Dec 2013
Posts: 74
Location: Poland
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| Posted: Fri Dec 27, 2013 12:50 pm Post subject: |
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pd1987 wrote:
Thank you all!
Also my friend told me that tube contain some optical elements, so what I presented on photos is just a front lens.
That's a pity - I really like projection lenses 
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carlzeissjena
Joined: 15 Aug 2012
Posts: 15
Location: Munich Germany
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| Posted: Mon Jan 20, 2014 9:20 pm Post subject: Projektionsobjektiv 2,1 200 by Carl Zeiss Jena |
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carlzeissjena wrote:
Hi guys,
this is the front group/element (Achromat) of a 2 Group / 4 lens projector lens made for up to 18x24 mm cine format (1/2 of 35 mm).
The front element should not be used "stand alone" as it´s errors are supposed to be countered/equalized by the rear element (also an Achromat) to give the best posible picture.
This projection lens was the largest of the "Basic" grade of Carl Zeiss Jena projection lenses series "Kipronar", made up of always 2 Achromat groups/4 Elements. They have superb resolution in the center at high contrast (with only 4 surfaces) but fall off quite a bit towards the edges. So very well usable on small CCD/CMOS sensors with significant less than 18x24 mm size.
The next "Better" grade lenses were the "Prokinar"s, already 5 to 6 element optics with less fall off towards the edges.
The "Premium" grade were the "Visionar"s at high aperture f1,6 to at worst 1,9 ! with the least fall off towards the edges with up to 200mm focal length = 4.1", all 6 element- 6 group type.
Hope this helps
Georg |
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Attila
Joined: 24 Feb 2007
Posts: 57853
Location: Hungary
Expire: 2025-11-18
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| Posted: Mon Jan 20, 2014 10:27 pm Post subject: |
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Attila wrote:
Many thanks Georg!
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Items on sale on Ebay
Sony NEX-7 Carl Zeiss Planar 85mm f1.4, Minolta MD 35mm f1.8, Konica 135mm f2.5, Minolta MD 50mm f1.2, Minolta MD 250mm f5.6, Carl Zeiss Sonnar 180mm f2.8
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kds315*
Joined: 12 Mar 2008
Posts: 16561
Location: Weinheim, Germany
Expire: 2021-03-09
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| Posted: Tue Jan 21, 2014 6:14 am Post subject: |
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kds315* wrote:
Yes, Georg is correct of course. That Kipronar is a Petzval lens btw.
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