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HELP: repair Sonnar 180/2.8 p6
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PostPosted: Wed Jun 16, 2010 5:22 pm    Post subject: HELP: repair Sonnar 180/2.8 p6 Reply with quote
Hi,
i found a Sonnar 180/2.8 for pentacon six(the "olympic sonnar",first version) at a good price but with stuck diagraphm:
can you find me a guide to repair it?(so i can decide if buy it or not)


Thanks!


PostPosted: Thu Jun 17, 2010 10:22 am    Post subject: Reply with quote
i didn't try to dismantle my sonnar 180mm but i know that you can unscrew the front ring that has writing on it, and gain access to insides of the lens

this link is for fixing 120mm biometar but hope it helps with your sonnar , at least to give you some tips
http://www.kyphoto.com/classics/biometar.html


PostPosted: Fri Jun 18, 2010 6:37 am    Post subject: Reply with quote
I hope to remember that right:
The Zeiss Jena Sonnar 180/2.8 for Pentacon Six has a bowden cable for the iris operation transfer from mount to iris - this is very uncommon.
It has a ring inside the mount that was of no function on my Kiev 60, I suppose it was planned for light measuerment with open iris (don´t find the correct term).
Picture of it on my old site:
http://home.arcor.de/keinath/Selbstbau/Sonnar180.htm

Some people say that this lens is not easy to work on. I haven´t a bad remembrance of my work on it (also the iris) - but I suppose I did´t disassembled full.


PostPosted: Sat Jan 22, 2011 9:56 pm    Post subject: Reply with quote
ZoneV wrote:
I hope to remember that right:
The Zeiss Jena Sonnar 180/2.8 for Pentacon Six has a bowden cable for the iris operation transfer from mount to iris - this is very uncommon.
It has a ring inside the mount that was of no function on my Kiev 60, I suppose it was planned for light measuerment with open iris (don´t find the correct term).
Picture of it on my old site:
http://home.arcor.de/keinath/Selbstbau/Sonnar180.htm

Some people say that this lens is not easy to work on. I haven´t a bad remembrance of my work on it (also the iris) - but I suppose I did´t disassembled full.
you mean this:


it looks very articulated but if i finish correctly my Angenieux 70-210/3.5 FD to Sony alpha modification i'll may try it.


PostPosted: Sat Jan 22, 2011 11:24 pm    Post subject: Reply with quote
This is zebra version and not the first one, rather before last one.
Stuck blades are very common issue, seek in Google for Zebra version.


PostPosted: Sun Jan 23, 2011 12:49 am    Post subject: Reply with quote
Attila is right.
It's Zebra version and as any respectable Zeiss Zebra blades are extremely proned to get stuck.
Anyway, I don't know how do you want to attack the issue but if you want to do a thorough job you want to clean the blades one by one and then put everything back in place.
Removing the front element is a must.
Load up some pictures, maybe I remember something.


PostPosted: Sun Jan 23, 2011 8:26 pm    Post subject: Reply with quote
Himself wrote:
Attila is right.
It's Zebra version and as any respectable Zeiss Zebra blades are extremely proned to get stuck.
Anyway, I don't know how do you want to attack the issue but if you want to do a thorough job you want to clean the blades one by one and then put everything back in place.
Removing the front element is a must.
Load up some pictures, maybe I remember something.

I cleaned a lot of lens before without guides(pentacon 135 and 50mm,tair-11,etc.)but i don't have this lens,i want to buy it and i need to know if it's an impossible job or it's relative simple and how i can do it in the fastest and simplest way(fo example opening it fron the front).

The sample image isn't mine but it's the zebra version.

If you have a guide please post the link,i searched all the web but i cannot find anything!!!

EDIT:
i actually found something:
http://forum.mflenses.com/viewtopic.php?t=23409
http://www.pentaxforums.com/forums/pentax-slr-lens-discussion/115534-carl-zeiss-jena-180mm-f2-8-p6-problem-aperture-ring.html

i'm not sure about what exact version i'll get but it must be a zebra,if i can open it from the front element it will be a piece of cake(like the pentacon 50/1.8!). Very Happy


I'll may get the lens even if i'm still working on my angenieux bayonet mod.


PostPosted: Sun Jan 23, 2011 9:28 pm    Post subject: Reply with quote
I don't have a link or pictures to upload.
If that's the only problem I'd buy it.
It's easy to have it fixed.


PostPosted: Mon Jan 24, 2011 1:20 pm    Post subject: Reply with quote
http://forum.mflenses.com/disassembling-and-repair-czj-180mm-f2-8-aus-jena-version-t34170.html

Repair-howto of the leatherette version of the 180 sonnar. Zebra version is the same inside afaik.


PostPosted: Thu May 02, 2013 1:02 pm    Post subject: Reply with quote
I'm sorry to bring this up. I've just got an Olympic Sonnar and I cant get it works. Sad . The trouble is focusing helicoid, I cant find out how it works and what must I do.
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