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cambug
Joined: 06 Jun 2010
Posts: 91
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 Posted: Fri Nov 08, 2013 4:59 pm Post subject: Lens Mount Quiz |
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cambug wrote:
Have a look on this lens:
http://www.ebay.com/itm/Carl-Zeiss-Jena-Tessar-50-mm-f-2-8-UNKNOWN-MOUNT-/350920599655?pt=Camera_Lenses&hash=item51b47f6867
The mount of the lens is really unusual, my first thought was Exakta 66, but for a 50mm Tessar? Not likely...
Anybody wants to find out the answer? I don't have a clue... |
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Rick1779
Joined: 17 May 2013
Posts: 1207
Location: Italy
Expire: 2014-06-06
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| Posted: Fri Nov 08, 2013 5:08 pm Post subject: |
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Rick1779 wrote:
I bet for a Frankenstein
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Andrew G.
Joined: 18 Jul 2010
Posts: 159
Location: Pennsylvania, USA
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| Posted: Fri Nov 08, 2013 6:04 pm Post subject: |
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Andrew G. wrote:
It looks like some form of adapter to me. For some reason, Praktina comes to mind.
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hinnerker
Joined: 17 Aug 2009
Posts: 929
Location: Germany near Kiel
Expire: 2015-08-09
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| Posted: Fri Nov 08, 2013 6:18 pm Post subject: |
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hinnerker wrote:
Looks like an AKA Akarelle/Akarette mount.
Regards
Henry
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philslizzy
Joined: 07 Aug 2012
Posts: 4748
Location: Cheshire, England
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| Posted: Sat Nov 09, 2013 1:02 am Post subject: |
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philslizzy wrote:
| hinnerker wrote: |
Looks like an AKA Akarelle/Akarette mount.
Regards
Henry |
Not AKA mount. The male thread of the AKA is on the camera not the lens.
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David
Joined: 13 Apr 2011
Posts: 1869
Location: Denver, Colorado
Expire: 2013-01-25
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| Posted: Sat Nov 09, 2013 1:49 am Post subject: |
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David wrote:
I have a theory.
So the lens is a 50/2.8, meaning the largest aperture will be about 17mm. I pulled the image into Illustrator and the lens (including the thread's widest point) is 3.4 times the lens opening size. Assuming that's 17.4mm, then the mount grip is about 60mm.
Also, the mount looks a LOT newer and better than the lens, so it's decidedly not original.
I suspect someone converted that into an enlarger lens and used a retaining ring from a Compur LF shutter to hold it onto the board. Having a lens with focusing capability on an enlarger would make ultra-fine grain focusing a bit easier to do.
So that's my theory -- home-adapter for enlarger use.
One off thing about that lens -- the distance scale seems different than a typical 50mm lens. Usually, infinity is 200X the focal distance and beyond. So, on a 50mm, that's about 33 feet. The distance scale on that goes to 50 feet and then infinity. Am I nuts for thinking that's not standard?
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luisalegria
Joined: 07 Mar 2008
Posts: 6627
Location: San Francisco, USA
Expire: 2018-01-18
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| Posted: Sat Nov 09, 2013 2:17 am Post subject: |
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luisalegria wrote:
This was adapted.
I think the mount is a custom one for Photo-Sonics high speed movie cameras.
I have seen similar conversions of lots of Schneider lenses.
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Pancolart
Joined: 04 Feb 2008
Posts: 3693
Location: Slovenia, EU
Expire: 2013-11-18
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| Posted: Sat Nov 09, 2013 10:33 am Post subject: |
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Pancolart wrote:
Bentzin Primarflex perhaps (mount, not lens).
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kds315*
Joined: 12 Mar 2008
Posts: 16546
Location: Weinheim, Germany
Expire: 2021-03-09
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| Posted: Sat Nov 09, 2013 11:10 am Post subject: |
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kds315* wrote:
I agree with Luis, converted to some sort of film camera mount it seems. Not sure about Photo-Sonics.
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Last edited by kds315* on Sat Nov 09, 2013 11:23 am; edited 1 time in total |
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Pancolart
Joined: 04 Feb 2008
Posts: 3693
Location: Slovenia, EU
Expire: 2013-11-18
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| Posted: Sat Nov 09, 2013 11:22 am Post subject: |
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Pancolart wrote:
Reflex Korelle ?
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iangreenhalgh1
Joined: 18 Mar 2011
Posts: 15685
Expire: 2014-01-07
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| Posted: Sat Nov 09, 2013 12:39 pm Post subject: |
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iangreenhalgh1 wrote:
It's a Tessar 2.8/50 so it won't be for Primarflex or Reflex Korelle as those are 6x6 MF cameras and the coverage of the Tessar is insufficient. Also, the lens would only focus a few feet away due to the 50% longer register.
Whatever it is converted to fit will be something uncommon that used 35mm film, so Luis is probably on the right track.
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Pancolart
Joined: 04 Feb 2008
Posts: 3693
Location: Slovenia, EU
Expire: 2013-11-18
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| Posted: Sat Nov 09, 2013 1:25 pm Post subject: |
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Pancolart wrote:
| iangreenhalgh1 wrote: |
It's a Tessar 2.8/50 so it won't be for Primarflex or Reflex Korelle as those are 6x6 MF cameras and the coverage of the Tessar is insufficient. Also, the lens would only focus a few feet away due to the 50% longer register.
Whatever it is converted to fit will be something uncommon that used 35mm film, so Luis is probably on the right track. |
I meant mount. Lens is only inserted onto.
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cambug
Joined: 06 Jun 2010
Posts: 91
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| Posted: Sun Nov 10, 2013 1:32 am Post subject: |
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cambug wrote:
Some time ago, there were a number of Schneider Xenotar's adapted by Photo Sonic offered for sale, this is a re-sale on Ebay:
http://www.kevincameras.com/gallery/v/classics_collectables/albuw30/schneider/4524340/
The mount on this sample does not look quite the same as the Tessar in discussion, any new attempt? |
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