On Mon, Feb 13, 2012 at 1:43 PM, Mark Roberts <[email protected]> wrote: > The most common problem with the A50/1.7 is the stuck/notchy aperture > ring. If that's OK you'll be golden.
Yes. I had two of them. Pentax cheapened the aperture mechanism on the A50/1.7 by using a plastic aperture ring. Inside, there is a little springy tang that falls into notches and adjusts the throw of the iris actuating mechanism. This steel tang is fastened to the plastic by two heat-expanded plastic nubbins. Over time, it tends to work loose and slip off, which causes the ring to jam. My camera tech took the ring off, pulled out the fallen spring tang, then re-fixed it in place with a little screw and some glue. Good as new, cost me $25. -- Godfrey godfreydigiorgi.posterous.com -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
