On 8 Mar 2006 at 15:07, Godfrey DiGiorgi wrote: > 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.
I've repaired three that failed this way. Their aperture ring is a very poor design and is prone to stiffness, binding and roughness even if the metal tabs don't become loose in the mech. Rob Studdert HURSTVILLE AUSTRALIA Tel +61-2-9554-4110 UTC(GMT) +10 Hours [EMAIL PROTECTED] http://members.ozemail.com.au/~distudio/publications/ Pentax user since 1986, PDMLer since 1998
