Don't use lens paper. It can leave tiny scratches. Use a microfiber cloth. You
can get one in a camera store.
Paul
-------------- Original message ----------------------
From: "Jens Bladt" <[EMAIL PROTECTED]>
> Funny - this guy mus be VERY honest! And perhaps not too carefull with his
> lenses ;-).
> They are probably great anyway.
> I use very little deturgent (for dishes - sulfo), preferably demineralized
> water, and later (naturally) lens paper.
> I clean lenses only once or twice in it's lifetime. That is NOT too often, I
> believe. And I use a blower without a brush. I prefere not to touch the
> elements at all.
>
> I alwasy keep them in a cupbaord, a camera bag or in use on the camera. I
> try not top leave a lens on the camera (will ruin the aperture action) and
> always stoped down, naturally - and standing rear elemenet up with
> protecting filer (UW or Sky) and caps - at lest the rear cap on.
> That's all.
>
> Jens Bladt
> http://www.jensbladt.dk
>
> -----Oprindelig meddelelse-----
> Fra: Bob Sullivan [mailto:[EMAIL PROTECTED]
> Sendt: 8. marts 2006 00:42
> Til: [email protected]
> Emne: Re: bright spot on rear lens element?
>
>
> Jens,
> We are not pulling your leg. Read the listings that Igor references.
> The guy TALKS about bright spots on the rear element of his lenses.
> He is not referencing bright spots in his ebay listing photos.
> Regards, Bob S.
>
> On 3/7/06, Jens Bladt <[EMAIL PROTECTED]> wrote:
> > The bright spot is a reflection of the light source used to make the
> > photograph. Isn't it?
> > Are you pulling mye leg...????
> > Regards
> >
> > Jens Bladt
> > http://www.jensbladt.dk
> >
> > -----Oprindelig meddelelse-----
> > Fra: Bob Sullivan [mailto:[EMAIL PROTECTED]
> > Sendt: 6. marts 2006 02:20
> > Til: [email protected]
> > Emne: Re: bright spot on rear lens element?
> >
> >
> > 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_W
> > 0QQitemZ7594561955QQcategoryZ48558QQssPageNameZWDVWQQrdZ1QQcmdZViewItem
> > >
> >
> http://cgi.ebay.com/Pentax-Telephoto-SMCP-FA-100mm-f-2-8-Macro-AF-lens-NR_W0
> > QQitemZ7594559450QQcategoryZ48558QQssPageNameZWDVWQQrdZ1QQcmdZViewItem
> > >
> >
> http://cgi.ebay.com/Pentax-Normal-SMCP-FA-50mm-f-1-4-Autofocus-Lens-NR_W0QQi
> > temZ7594556499QQcategoryZ48558QQssPageNameZWDVWQQrdZ1QQcmdZViewItem
> > >
> >
> http://cgi.ebay.com/Pentax-Wide-Angle-FA-24mm-f-2-0-AL-IF-AF-EX-rare-NR_W0QQ
> > itemZ7594551547QQcategoryZ48558QQssPageNameZWDVWQQrdZ1QQcmdZViewItem
> > >
> >
> http://cgi.ebay.com/Pentax-Telephoto-SMCP-FA-300mm-f-4-5-ED-IF-AF-lens-NR_W0
> > QQitemZ7594569810QQcategoryZ48558QQssPageNameZWDVWQQrdZ1QQcmdZViewItem
> > >
> > > 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
> > >
> > >
> > >
> >
> > --
> > No virus found in this incoming message.
> > Checked by AVG Free Edition.
> > Version: 7.1.375 / Virus Database: 268.1.2/274 - Release Date: 03/03/2006
> >
> > --
> > No virus found in this outgoing message.
> > Checked by AVG Free Edition.
> > Version: 7.1.375 / Virus Database: 268.2.0/276 - Release Date: 03/07/2006
> >
> >
>
> --
> No virus found in this incoming message.
> Checked by AVG Free Edition.
> Version: 7.1.375 / Virus Database: 268.2.0/276 - Release Date: 03/07/2006
>
> --
> No virus found in this outgoing message.
> Checked by AVG Free Edition.
> Version: 7.1.375 / Virus Database: 268.2.1/277 - Release Date: 03/08/2006
>
