iangreenhalgh1
Joined: 18 Mar 2011 Posts: 15685
Expire: 2014-01-07
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Posted: Sun Sep 13, 2020 12:50 am Post subject: |
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iangreenhalgh1 wrote:
Perhaps from an x-ray machine or other medical/industrial imaging system, perhaps it functioned as a relay lens.
The Rotelar is a telephoto design with a small image circle - just over half the focal length, with only the inner portion of that image circle being rendered well. _________________ I don't care who designed it, who made it or what country it comes from - I just enjoy using it! |
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stevemark
Joined: 29 Apr 2011 Posts: 3754 Location: Switzerland
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Posted: Sun Sep 13, 2020 7:50 pm Post subject: |
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stevemark wrote:
In this thread from 2005 ...
https://grossformatfotografie.de/thread/727-tele-arton-5-5-270-vs-rotelar-5-6-270/
... the last poster describes a phonecall to Rodenstock, asking about the Rotelar history. According to the informatrioin of a Rodenstock technician, the Rotelars originally were made for x-ray machines (I would say probably for the tech realm, not for humans, because they are really slow). Again according to the Rodenstock technician, later the Rotelars were also used in general photography, e. g. the 270mm for 9x12cm large format. The Rotelar were not only corrected for infinity, but also for smaller distances (unlike the Schneider Tele-Arton).
S _________________ www.artaphot.ch |
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visualopsins
Joined: 05 Mar 2009 Posts: 10530 Location: California
Expire: 2025-04-11
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Posted: Tue Sep 15, 2020 7:04 pm Post subject: |
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visualopsins wrote:
One tube slides into another (two tubes )for focusing...
Guessed some sort of process lens -- x-ray makes sense... _________________ ☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮ like attracts like! ☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮
Cameras: Sony ILCE-7RM2, Spotmatics II, F, and ESII, Nikon P4
Lenses:
M42 Asahi Optical Co., Takumar 1:4 f=35mm, 1:2 f=58mm (Sonnar), 1:2.4 f=58mm (Heliar), 1:2.2 f=55mm (Gaussian), 1:2.8 f=105mm (Model I), 1:2.8/105 (Model II), 1:5.6/200, Tele-Takumar 1:5.6/200, 1:6.3/300, Macro-Takumar 1:4/50, Auto-Takumar 1:2.3 f=35, 1:1.8 f=55mm, 1:2.2 f=55mm, Super-TAKUMAR 1:3.5/28 (fat), 1:2/35 (Fat), 1:1.4/50 (8-element), Super-Multi-Coated Fisheye-TAKUMAR 1:4/17, Super-Multi-Coated TAKUMAR 1:4.5/20, 1:3.5/24, 1:3.5/28, 1:2/35, 1:3.5/35, 1:1.8/85, 1:1.9/85 1:2.8/105, 1:3.5/135, 1:2.5/135 (II), 1:4/150, 1:4/200, 1:4/300, 1:4.5/500, Super-Multi-Coated Macro-TAKUMAR 1:4/50, 1:4/100, Super-Multi-Coated Bellows-TAKUMAR 1:4/100, SMC TAKUMAR 1:1.4/50, 1:1.8/55
M42 Carl Zeiss Jena Flektogon 2.4/35
Contax Carl Zeiss Vario-Sonnar T* 28-70mm F3.5-4.5
Pentax K-mount SMC PENTAX ZOOM 1:3.5 35~105mm, SMC PENTAX ZOOM 1:4 45~125mm
Nikon Micro-NIKKOR-P-C Auto 1:3.5 f=55mm, NIKKOR-P Auto 105mm f/2.5 Pre-AI (Sonnar), Micro-NIKKOR 105mm 1:4 AI, NIKKOR AI-S 35-135mm f/3,5-4,5
Tamron SP 17mm f/3.5 (51B), Tamron SP 17mm f/3.5 (51BB), SP 500mm f/8 (55BB), SP 70-210mm f/3.5 (19AH)
Vivitar 100mm 1:2.8 MC 1:1 Macro Telephoto (Kiron)
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