A while back I mentioned that I had seen a lens at a store, on which the diaphragm closed slowly even though there was no oil buildup visible on it (a relatively common problem with older lenses that have been exposed to excessive heat).
The diaphragm was distinctly sluggish, and I used that fact to bargain the price down (on a Pentax 35mm f/3.5, a very sharp lens -- I had one previously which I sold, and missed). I brought the lens home, and began playing with the little lever on the back that closes down the diaphragm. After a couple of dozen times working it back and forth, the diaphragm perked up, and now it is as fast as new. It seems that just from sitting in the store (on a camera, which forces it open) and the dirt buildup, it had become sluggish, but a little exercise brought it back to life. _________________________________________________________________ Chat with friends online, try MSN Messenger: http://messenger.msn.com - 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 .
