[rollei_list] Re: Zeiss Lens Cleaner
- From: "Richard Knoppow" <dickburk@xxxxxxxxxxxxx>
- To: <rollei_list@xxxxxxxxxxxxx>
- Date: Mon, 4 Jul 2011 21:40:47 -0700
----- Original Message -----
From: "CarlosMFreaza" <cmfreaza@xxxxxxxxx>
To: <rollei_list@xxxxxxxxxxxxx>
Sent: Monday, July 04, 2011 7:18 PM
Subject: [rollei_list] Re: Zeiss Lens Cleaner
2011/7/4 Richard Knoppow <dickburk@xxxxxxxxxxxxx>:
Pretty much all the lens cleaners and window cleaners
which have MSDS
that actually list ingredients turn out to be based on
either; 1, isopropyl
alcohol (isopropanol); 2, Ammonia, usually ammonium
hydroxide but ammonium
carbonate in the case of Kodak Lens Cleaner; 3, Butyl
alcohol, AKA several
other names..."
Richard:
Last year I found in my Pentax 28mm-80mm zoom
lens a
strange and pretty large white "foam" spot on the front
element, it
did not seem fungi and was close to one of the edges. I
tried with a
blower, with a brush, with a lens tissue and a lens cleaner
but I
couldn't eliminate it. Finally, I got a medicinal alcohol
bottle
-ethanol- and dampening a lens tissue with the alcohol I
applied it on
the white spot, it was disappearing slowly up to disappear
completely.
It seems it did not cause damage on the lens coating and my
zoom looks
pristine again, I use this alcohol for some extreme
situation only.
Carlos
---
I wonder what that was. None of the commercial lens or
window cleaners seem to contain ethyl alcohol. I don't know
why.
--
Richard Knoppow
Los Angeles
WB6KBL
dickburk@xxxxxxxxxxxxx
---
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