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WolverineX
Joined: 19 Apr 2009 Posts: 1694 Location: Zagreb , Croatia , Europe
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Posted: Mon Jul 19, 2010 10:32 pm Post subject: how to - tessar disassembly |
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WolverineX wrote:
i had czj tessar that didn't close diaphragm, aperture ring just spinned around the lens... i've looked around the net and i found few how-to guides, but problem was that in those tessar has screws on the rear side where the mount is...mine didn't , no screws at all and it's fully automatic version ( serial is 6762834), so i was at a loss how to open it...managed to unscrew the front plate of the lens but further than that nothing...until recently...so i'll post this how-to to help others that may come upon tessar with back like mine...
so here we go...
the lens
the back
as you can see no screws...and the trick is...back plate unscrews as a whole, turn counterclockwise
after back plate is off, you can see metal ring that makes this lens fully automatic, it is held in place by a pin by the dof lever and tied to the rest of the lens by the spring on the oposite side. take it off the pin and be careful not to let the spring unhook itself because it's pain to return it in it's place (not hard but patience testing). now you can unscrew 4 screw that hold this plate to the lens, position of the screws is unique so reassembly won't be a problem.
now you have access to the aperture ring and to the spring that opens the iris and you can fix what's faulty
to reassemble the back of the lens, just go backwards, only thing you have to watch after is to put the automatic ring right, with screwdriver pull out the lever of the aperture pin (no.1 in the next pic) and put the automatic ring's lever inside the aperture pin lever, also lever that pulls the spring that opens the iris (no.2 in the next pic)
_________________ my tools:Oly E-M5 + 45mm/1.8 + Oly E-520 + 12-60 + 14-42 + 70-300 + Sigma 105mm + FL-50R + EC20 + SRF-11 ring flash
http://forum.mflenses.com/wolverinex-testing-my-lenses-series-link-list-t39524.html |
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WolverineX
Joined: 19 Apr 2009 Posts: 1694 Location: Zagreb , Croatia , Europe
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Posted: Sun Jul 25, 2010 4:54 pm Post subject: |
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WolverineX wrote:
and that's how to do that with this version of tessar _________________ my tools:Oly E-M5 + 45mm/1.8 + Oly E-520 + 12-60 + 14-42 + 70-300 + Sigma 105mm + FL-50R + EC20 + SRF-11 ring flash
http://forum.mflenses.com/wolverinex-testing-my-lenses-series-link-list-t39524.html |
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Flemming
Joined: 25 Oct 2010 Posts: 4 Location: Denmark
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Posted: Sat Jul 27, 2013 2:31 pm Post subject: |
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Flemming wrote:
Hi WolverineX,
thank you for the explanation. I have drawings (PDF) from 1947, and 3 other repair explanations from the net, but no one on this version of the Tessar.
My first Tessar was repaired with the advice from:
http://oomz.net/tessar/
but my preset Praktina Tessar and the newest one, a 1964-65 version is not seen among the internet solutions.
Attila and the other moderators shold make a section for repair tips.
Flemming Sorensen _________________ Mainly AF Minolta and sony cameras Primary house is a700
Manual focus: 32 bodies mainly Minolta and Praktica |
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WolverineX
Joined: 19 Apr 2009 Posts: 1694 Location: Zagreb , Croatia , Europe
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Posted: Sat Jul 27, 2013 3:01 pm Post subject: |
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WolverineX wrote:
Flemming wrote: |
Attila and the other moderators shold make a section for repair tips.
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this is the section for repair tips _________________ my tools:Oly E-M5 + 45mm/1.8 + Oly E-520 + 12-60 + 14-42 + 70-300 + Sigma 105mm + FL-50R + EC20 + SRF-11 ring flash
http://forum.mflenses.com/wolverinex-testing-my-lenses-series-link-list-t39524.html |
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mo
Joined: 27 Aug 2009 Posts: 8982 Location: Australia
Expire: 2016-07-30
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Posted: Sat Jan 31, 2015 2:04 am Post subject: |
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mo wrote:
Does anyone have the Exakta Tessar 2.8/50 (serial 60*****)version and its disassembly instructions? _________________ Moira, Moderator
Fuji XE-1,Pentax K-01,Panasonic G1,Panasonic G5,Pentax MX
Ricoh Singlex TLS,KR-5,KR-5Super,XR-10
Lenses
Auto Rikenon's 55/1.4, 1.8, 2.8... 50/1.7 Takumar 2/58 Preset Takumar 2.8/105 Auto Takumar 2.2/55, 3.5/35 Super Takumar 1.8/55...Macro Takumar F4/50... CZJ Biotar ALU M42 2/58 CZJ Tessar ALU M42 2.8/50
CZJ DDR Flektogon Zebra M42 2.8/35 CZJ Pancolar M42 2/50 CZJ Pancolar Exakta 2/50
Auto Mamiya/Sekor 1.8/55 ...Auto Mamiya/Sekor 2/50 Auto Mamiya/Sekor 2.8/50 Auto Mamiya/Sekor 200/3.5 Tamron SP500/8 Tamron SP350/5.6 Tamron SP90/2.5
Primoplan 1.9/58 Primagon 4.5/35 Telemegor 5.5/150 Angenieux 3.5/28 Angenieux 3,5/135 Y 2
Canon FL 58/1.2,Canon FL85/1.8,Canon FL 100/3.5,Canon SSC 2.8/100 ,Konica AR 100/2.8, Nikkor P 105/2.5
Last edited by mo on Sat Jan 31, 2015 11:49 am; edited 1 time in total |
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JJB
Joined: 02 Oct 2014 Posts: 424 Location: USA
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Posted: Sat Jan 31, 2015 2:40 am Post subject: |
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JJB wrote:
Thank you for sharing your experience! _________________ Nikon D80 with 18/55 kit lens
Fujifilm XE-1 with 18/55 kit lens
Lenses:
Konica Hexanon: 28/3.5, 50/1.7 (EE), 55/3.5 macro, 135/3.2 28-135/4-4.5, 80-200/4
Mamiya Sekor SX 28/2.8, 50/2, 55/1.4, 135/2.8
Minolta: 50/1.7, 35-70/3.5, 35-105/3.5-4.5
Olympus Zuiko: 28/3.5, 50/1.8, 85/2
Rikenon: 55/1.4
Soligor: 135s made by Tamron, Komura, Tokina
Takumar/Asahi/Pentax: Pentax M 35/2.8, SMC Takumar 35/3.5, 50/1.7 (Pentax) 55/1.8 (Super Tak), 105/2.8, 200/4
Tokina 60-300, 4-5.6
Tamron: 103A 80-210/3.8-4, 46A 70-210/3.8-4, 300/5.6 (Vernon Edonar)
Vivitar: 28/2.5, S1 28-90/2.8 (Komine), S1 70-210/3.5 (Kiron)
Yashica: ML 28/2.8, 50/2
Yashinon: 50/1.4
German: Meyer Gorlitz Oreston 50/1.8, CZJ Tessar 50/2.8, Isco Gottingen 135/3.5, Schneider-Kreuzach 200/5.5
Soviet: Helios 44/2, Helios 44/4, Industar 50/3.5 (both silver and black) |
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