Topic: Carl Zeiss Jena Sonnar 2.8/180

Hello there
I recently acquired a 1936 Carl Zeiss Jena Sonnar 2.8/180 lens.
It really need cleaning (fungus) and lubrication(stiff focusing).
Is there any link for how to take this lens apart?

Thanks in advance

Tak

Re: Carl Zeiss Jena Sonnar 2.8/180

Hello, sorry for my bad english, it's like that!...

Let me tell you that you have a terrific lens! Congratulations.
Unfortunately there is nothing on the web about his complet dismantel. I'm looking after since few weeks.

Anyway, the first part of dismantel is easy. And it become complicated.

First you have to unscrew the tripod barrel. The back with tripod ring.

Then unscrew tiny screw on focus ring. It's a typical way

Last edited by Oldscrew (2007-04-27 00:36:50)

Sorry for my frenglish hmm

Re: Carl Zeiss Jena Sonnar 2.8/180

I've recentlly opened up my Sonnar 135mm Zebra. What can I say? It's a real pain in the a..e.
The blades were stuck. After I've unscrewed the aperture block all the blades flown away. I've spend 3 days accumulating patience and time to put them back wich is a very Sisif operation unless you have the proper tools, which I haven't. I invented/inovated some.
I did one mistake, though.
I didn't mark the entry point so I can't focus to infinity. I have to repeat the operation. Part of it.

I have the 180mm Zebra which has the same problem: aperture stuck. This is the next week programmed.
I've unscrewed only the back rear just to have an idea.
So, before starting tear apart entirely your lens, try to replace the springs/spring especially the one who pull back the aperture lever.

Sorin

For sale
Contax PC Auto Bellows + Contax slide copier
http://forum.manualfocus.org//viewtopic.php?id=18640

Re: Carl Zeiss Jena Sonnar 2.8/180

Zebra 135 servicing; http://forum.hardware.fr/hfr/Photonumer … m#t1605532
smile

Mine is the 180 Olympic, not Zebra, and i suppose Tptram have this one too?
This one: http://www.mflenses.com/content/view/47/29/

Zebra're knowed to be hard to serviced

Sorry for my frenglish hmm

Re: Carl Zeiss Jena Sonnar 2.8/180

Oldscrew wrote:

Zebra 135 servicing; http://forum.hardware.fr/hfr/Photonumer … m#t1605532
smile



Zebra're knowed to be hard to serviced

For sale
Contax PC Auto Bellows + Contax slide copier
http://forum.manualfocus.org//viewtopic.php?id=18640

Re: Carl Zeiss Jena Sonnar 2.8/180

Have you ever try this job? I've opened some german aperture and it's not so difficult if you take the time. Be patient!
This http://fr.wikipedia.org/wiki/Image:Wattenstaafjes.jpg can help you, for maintain or push the blades.

Good luck! wink

Last edited by Oldscrew (2007-04-27 01:11:25)

Sorry for my frenglish hmm

Re: Carl Zeiss Jena Sonnar 2.8/180

Oldscrew wrote:

Have you ever try this job? I've opened some german aperture and it's not so difficult if you take the time. Be patient!
This http://fr.wikipedia.org/wiki/Image:Wattenstaafjes.jpg can help you, for maintain or push the blades.

Good luck! wink

Like I said, I did it but I had to invent some tools, and it's not about q tips.

Last edited by Himself (2007-04-27 13:51:01)

For sale
Contax PC Auto Bellows + Contax slide copier
http://forum.manualfocus.org//viewtopic.php?id=18640

Re: Carl Zeiss Jena Sonnar 2.8/180

Oldscrew wrote:

Mine is the 180 Olympic, not Zebra, and i suppose Tptram have this one too?
This one: http://www.mflenses.com/content/view/47/29/
.

yes, that's what I have.
the Olympic 180

Tak

Re: Carl Zeiss Jena Sonnar 2.8/180

You know what?? Now I know than the 2 internal glass are completly dependant of the optical barrel.
It means that you CAN'T dissmantel them (the iris too sad)!
This is an iron block without any screw possibility.
The glass seems to be (moul

Sorry for my frenglish hmm

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