SearchSearch MemberlistMemberlist RegisterRegister ProfileProfile Log in to check your private messagesLog in to check your private messages Log inLog in

Flek 35/2.4 and Sonnar 135/3.5 repair?
View previous topic :: View next topic  

PostPosted: Sun Aug 09, 2009 7:54 am    Post subject: Flek 35/2.4 and Sonnar 135/3.5 repair? Reply with quote

I got both lenses last week, but unfortunately I could not get them back into a working shape.

It looks as if the lenses are not really adequately engineered. It's interesting to note that both of these lenses have a diaphragm that's operated by a miniature "brake cable". This solution still works, but the diaphragm ring seems to be operated with at least one ball bearing (for the click stops) which is spring-tensioned. In both of the lenses, the little spring is damaged. I tried to reseat the ball bearings without using the springs and this works, but when I screw the M42 mount part back to both lenses the diaphragm ring gets stuck.

Have I missed something somewhere? I noted that there is at least one more spring (for the A/M switch) although I didn't find the ball bearing in both cases.

Any ideas from more experienced repairmen? Wink

PostPosted: Mon Aug 10, 2009 9:51 pm    Post subject: Reply with quote

Unfortunately I have no expertise on them, so I cannot be of any help...

Anyway, good luck!


PostPosted: Fri Aug 28, 2009 4:47 pm    Post subject: Reply with quote

Hi Spotmatic,

Take a look here:


Hope this helps.