Elmar Lang
Joined: 11 Apr 2012
Posts: 103
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 Posted: Fri Jul 21, 2017 7:32 pm Post subject: Carl Zeiss Jena Sonnar 180 /2,8 - Diaphragm setting |
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Elmar Lang wrote:
Hello,
I've just found, after some research, a CZ-Jena Sonnar 180/2,8 of a relatively early DDR production (s/n 4226437).
I see that the diaphragm setting ring has two chrome finished "buttons" and a round "window", through which I see the diaphragm value "22" so, I can freely rotate the setting ring from 2,8 up to the closest value, 22.
My question is whether there is a way to pre-set an intermediate value and see it through that round window, so that I can be sure to close at a pre-set value.
Many thanks in advance,
Enzo (E.L.) |
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visualopsins
Joined: 05 Mar 2009
Posts: 10532
Location: California
Expire: 2025-04-11
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| Posted: Fri Jul 21, 2017 8:05 pm Post subject: |
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visualopsins wrote:
Hi Enzo. Someone who knows will post here. My guess is depressing one of the buttons while turning the ring will sett the number in the window.
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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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Elmar Lang
Joined: 11 Apr 2012
Posts: 103
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| Posted: Fri Jul 21, 2017 8:12 pm Post subject: |
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Elmar Lang wrote:
Hello,
thank you for the reply.
The two "buttons" appear as being impossible to be depressed or moved in some way. The diaphragm ring, rotates freely and smoothly though, and the iris's blades are perfectly clean.
Let's wait for any further, most welcome input.
All the best,
Enzo |
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