Does the guy know how to clean a lens. Are his lenses clean, or are his bright spots residual oil? I wish we knew if he used residual oil remover (ROR). A film of oil (grease) about one molecule thick will change reflections. Regards, Bob S.
On 3/5/06, Igor Roshchin <[EMAIL PROTECTED]> wrote: > > > Hello! > > While watching a few e-Bay auctions for SMC-P lenses, I noticed > that all lenses from this seller have > "a bright spot on the rear lense element": > > http://cgi.ebay.com/Pentax-zoom-28-70mm-f-4-0-SMCP-FA-Autofocus-Lens-Extra_W0QQitemZ7594561955QQcategoryZ48558QQssPageNameZWDVWQQrdZ1QQcmdZViewItem > http://cgi.ebay.com/Pentax-Telephoto-SMCP-FA-100mm-f-2-8-Macro-AF-lens-NR_W0QQitemZ7594559450QQcategoryZ48558QQssPageNameZWDVWQQrdZ1QQcmdZViewItem > http://cgi.ebay.com/Pentax-Normal-SMCP-FA-50mm-f-1-4-Autofocus-Lens-NR_W0QQitemZ7594556499QQcategoryZ48558QQssPageNameZWDVWQQrdZ1QQcmdZViewItem > http://cgi.ebay.com/Pentax-Wide-Angle-FA-24mm-f-2-0-AL-IF-AF-EX-rare-NR_W0QQitemZ7594551547QQcategoryZ48558QQssPageNameZWDVWQQrdZ1QQcmdZViewItem > http://cgi.ebay.com/Pentax-Telephoto-SMCP-FA-300mm-f-4-5-ED-IF-AF-lens-NR_W0QQitemZ7594569810QQcategoryZ48558QQssPageNameZWDVWQQrdZ1QQcmdZViewItem > > http://tinyurl.com/q29el > http://tinyurl.com/rdyp6 > http://tinyurl.com/lmp5v > http://tinyurl.com/rtxb5 > http://tinyurl.com/s5j9b > > So, I am curious, what could be possible causes of this? > > The guy mentioned notorious cleaning of the lenses, so my > guess was that it could've been caused by using some wrong solvents > for cleaning, so that the SMC is removed, but I am not sure if > there is any coating on the rear element. > Moreover, if I had to guess, I'd say there is none. > > Any ideas? > > Thank you, > > Igor > > >
