On 24 Nov 2001, at 18:50, Mark Erickson wrote: > Well, all of my SMC-A lenses operate this way _except_ the A* 200 F4! The > lenses that I checked included an SMC-A 50mm F2.8 macro and an A* 300 F2.8 > lens. With all of these lenses, the "*" pin actually contacts the lens > flange when it is extended. When measured with a multimeter, the resistance > between the "*" pin and the lens flange is very low (1 ohm or so) when the lens > is set to "A". > > The "*" pin of the A* 200 F4, however, looks more like the pins on FA > lenses. It is surrounded with an opaque white synthetic material, and it > does not extend or retract based on the position of the aperture ring. I > checked it with my multimeter, and its resistance is always very high > whether the aperture ring is set to "A" or to an F-stop.
Hi Mark, You are correct re: the construction however the contact on my lens maintains a circuit to the mount flange when the aperture ring is at the A position and the lens works on the MZ-S as all the other A series lenses do. You might need to have the contacts inside the lens cleaned. Cheers, Rob Studdert HURSTVILLE AUSTRALIA Tel +61-2-9554-4110 UTC(GMT) +10 Hours [EMAIL PROTECTED] http://members.ozemail.com.au/~distudio/publications.html - This message is from the Pentax-Discuss Mail List. To unsubscribe, go to http://www.pdml.net and follow the directions. Don't forget to visit the Pentax Users' Gallery at http://pug.komkon.org .
