On Mar 8, 2006, at 12:54 PM, John Forbes wrote:
There are also ancient lenses on which the aperture ring has packed up - like my A 1:1.7 50mm. If it had spent its life mounted on a modern DSLR it would still be fine. ...
On that subject, I had an A50/1.7 that the aperture ring jammed. My friendly camera tech took it apart and found that the spring-finger that slides into notches at the back of the lens to give you the click stops was held in place with two little plastic pillars, and one of them had broken so jamming the ring. He cleaned it out, drilled a little hole, and cemented a screwed in pillar to hold the spring finger. I had three of those lenses, and after he was done I couldn't tell which was which anymore. Not bad for a $20 repair.
Godfrey
