Could the old grease that attracted so much dirt and becoming dry over the years. Still, it's a good idea to clean and relubricate it, if you can do it yourself.
regards, Alan Chan >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. _________________________________________________________________ MSN Photos is the easiest way to share and print your photos: http://photos.msn.com/support/worldwide.aspx - 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 .
