[Leica] Thumbs down for Lens Pen! ----tried and proven method

[wrs111445 at yahoo.com (Bill Smith)]

Awhile back here it was recommended to use the following method:
   
  1.) use bulb blower.
   
  2.) one application of pure, lab grade Acetone on a new Q-tip one one end 
and dry w/ the 
      other end.
   
  3.) repeat #2 above w/ new Q-tip.
   
  4.) one application of a "wetting agent" solution of one qt. bottle of 
distilled water/ two drops 
       of a dishwashing detergent on a new Q-tip and dry w/ the other end..
   
  5.) repeat #4 above w/ a new Q-tip.
   
  I have used this method over and over on my lenses when they get dirty or 
have fingerprints and it works like a champ.
   
  

G Hopkinson <hoppyman@bigpond.net.au> wrote:
  Very likely you may not identify any loss of quality at all in practical 
use from what you are describing. For cleaning fingermarks,
I use the Zeiss optical cleaning mixture with microfibre cloths. I find it 
to be excellent. You can get Zeiss moistened wipes in
sachets, too. I think someone may have mentioned them. I bought a couple of 
hundred off the bay a while back. They are really easy
to carry and effective to use. While you are being careful, be sure to use a 
clean soft brush to gently remove any dust or grit
before you wipe with anything. Plenty of people on the list will tell you 
that modern Leica lens coatings are tough and I have no
doubt that is true. I am always careful cleaning, maybe more than I need to 
be, but there is certainly no harm in it. I have never
scratched any lens over quite a few years of camera handling.

Cheers
Geoff 

-----Original Message-----
Subject: Re: [Leica] Thumbs down for Lens Pen!

Ok, upon close inspection with a pen light through the front of the lens, I 
still have some oily residue left over. Looking at the
lens directly on held to a light source like a ceiling lamp, the lens looks 
very clear all the way through, but with a pen light a
see some slight leftover stuff, including dust in my lens. 

I don't recommend anyone use a pen light with their precious lenses if 
they're in anyway obsessive. You won't like what you see! Am
I being obssesive about my lens, or should I order some ROR and a new 
microfibre cloth from BH photo? Will it affect picture quality
is what I'm asking?

Thanks,
G Medina


--- G Medina wrote:

> I had a oily fingerprint in the rear element of my 28mm Contax G2 
> lens. A microfibre cloth didn't work.
> Breathing on it didn't work either. Distilled water just moved the 
> print around. I ordered the lens pen, and it also just shifted the oil 
> around. So I researched several days and decided to give windex and a 
> soft nose tissue a try. Believe it or not, it worked the best! I'm 
> being very careful, so I've waited till morning to evaluate the 
> result, but my result looked good last night.
> 
> I'd be afraid to use this on a single coated 50's lens, but it seems 
> to work nice on modern coated lenses.
> 
> Anyone use Windex before?
> 
> Thanks,
> G Medina
> 
> 
> 
>
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_______________________________________________
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See http://leica-users.org/mailman/listinfo/lug for more information


       
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