Need help opening a Sonnar 85/2.8 in contax/yashica mount

naaldvoerder · Joined: 06 May 2011 Posts: 15

Hi,

My Sonnar 85mm/2.8 has oil on the diafragm-blades. I try to service the lens myself but have trouble "entering " the lens. I removed the front lensgroup and i can remove the bayonet and the i'm stuck. I can't remove the irisassembly from the front and I can not enter the lens from the rear. I photographed the process so far.

https://picasaweb.google.com/101066142895334045617/Sonnar#

I hope someone can give me a good tip on how to proceed with this lens.

Thanks

Jaap Jan

naaldvoerder · Joined: 06 May 2011 Posts: 15

I succeeded! Was able to get the apertureassembly out, rinse in lighterfluid and reassemble!!! Need some better tools, I guess. I uploaded a picasaweb album with more pics to clarify.

https://picasaweb.google.com/101066142895334045617/Sonnar#

Very Happy

Attila · Expire: 2025-11-18

Many thanks for sharing the solution! Congrats!