Archived posting to the Leica Users Group, 1996/05/28

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To: leica-users@mejac.palo-alto.ca.us (leica-users)
Subject: Re: Lens Cleaning
From: ohtonen.2@swsgen01es.ntc.nokia.com (Ohtonen Pasi)
Date: Tue, 28 May 1996 21:33:30 +0300
Organization: Nokia Telecommunications
 

I asked from local camera and optics repair shop,
how to clean a lens. There I was told the way they
they do it at the shop. They use three ingredients:
 - highly refined petroleum spirit,
 - wads of cotton and
 - pressurizer air (from aerosol can).
First, use pressurized air and soft paintbrush to clean
the lens from dust as usual.
Then, put small amount of petroleum to a cotton,
and wipe the lens with very gentle circular motions.
To finish the treat, use pressurized air again to dry
the lens. Never use lens cleaning paper!
 I asked whether the lens coatings can
withstand the petroleum and he said it's harmless.

Have any f you LUG nuts heard from this sort of
technique?

Regards,

Pasi Ohtonen