I'm not sure whether I'm interpreting C.H.'s method correctly, but I think
what he means is using one's breath to leave a fine film of moisture on a
lens, which is used for a final polishing/cleaning. This vapor is, in
effect, distilled water - relatively clean, pure and free of sedimentary or
other material that might leave unwanted residue.
Pardon me if I seem to be stated the obvious, but I discovered this year
that my grandmother - an extremely intelligent person - didn't know how to
use her breath to clean her eyeglasses! Folks like her who have lived their
entire lives in a climate that seldom gets very cold might never actually
"see" their breath in wintertime. So it wouldn't occur to them that exhaled
breath contains a significant amount of moisture.
Of course, plain old spit works pretty well for defogging scuba masks,
cleaning eyeglasses and degunking babies' faces. I wouldn't try it on an
adult tho'. They tend to get grossed out.
Lex
===
From: "C.H.Ling" <chling@xxxxxxxxxxxx>
Subject: Re: [OM] Black flakes, again
Date: Wed, 13 Sep 2000 11:51:06 +0800
To clean a lens professionally is very difficult, I have cleaned more than
20 different Zuikos, some more than one time...
In most cases there will be very fine dust left on the surface of lens
element. Most lens cleaning liquid leave residual, 75 0sopropyl alcohol is
no exception, I use it for the first cleaning and then do the final
cleaning
with moisture from the mouth...
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