You're making some erroneous assumptions, Godders. "All that cleaning", for example. Lightly flicking or puffing on either side of a filter (unless an oily smear is seen) may be described as a "thorough cleaning". My filter changing is very infrequent at that. In any case, if one is aggressive enough to damage even the filter coating, they're better off avoiding lens element cleaning. BTW, in my world dust cannot migrate to the area between the filter and the lens unless the filter is removed. :)
Jack --- Godfrey DiGiorgi <[EMAIL PROTECTED]> wrote: > Dust is "speck" for me too. > > Sounds to me like you're posing a greater risk to the glass surfaces > > with all that cleaning, Jack. > > I haven't needed to clean a lens more than a couple of times in the > past year at most. I give them a puff with a hand blower to get the > dust off if I see any, and I inspect them every day when I put them > away. I only clean them with a lens cloth if I see something like a > fingerprint or oily residue or junk that won't blow away with the > puff. That's very very rare. When it happens, and it does > occasionally, I take great care to clean the glass properly. > > When I did use filters all the time, I had to clean both filters and > > lens much more frequently due to the build up of fine dust between > the front element and the filter. Antireflective coatings on lenses > are typically much more scratch resistant then those applied to > filters ... probably due to cost ... and cleaning filters damages > them much more than cleaning lenses. > > No reason to go on with this debate, however. I'm not going to change > > my mind and I bet you'll keep doing what you do as well. ;-) > > Godfrey > > On Apr 23, 2007, at 10:30 AM, Jack Davis wrote: > > > To eliminate that possibility, I ALWAYS thoroughly clean both the > > front > > and back of each filter before placing or replacing it on the lens. > > Thus virtually eliminating the problem. Additionally, because I > used > > the word "speck", don't assume I'm not including any offending > debris > > such as "dust"...etc, etc, etc. > > I use coated filters, but my cleaning warning, as I'm sure you > > understood, was for those who would do harm to the lens element > > coatings. > > > -- > PDML Pentax-Discuss Mail List > [email protected] > http://pdml.net/mailman/listinfo/pdml_pdml.net > __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net
