On my CZJ 20/2.8, I use a Heliopan Slim multicoated UV filter. It's a bit slimmer than the Pentax. Shel has the CZJ right now. Shel, can you see if it touches the glass? How slim is it?
I considered using a B+W MC UV Slim, which is even slimmer, but it isn't threaded to accept a hood. I've used 52mm B+W Slims on my Pentax SMC wide angles (24/2.8, 28/2, and 35/2) to prevent vignetting. On those lenses, I don't need threads at the far end because I use(d) the HAMA rectangular clamp-on filter. In truth, I think I had to substitute a Heliopan or two because the B+W's outer diamater was too wide to let the HAMA slip over. [EMAIL PROTECTED] -------------------------------------------------------------------- mail2web - Check your email from the web at http://mail2web.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 .

