Archived posting to the Leica Users Group, 1998/01/29

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Subject: Re: [Leica] Lens Pen
From: Five Senses Productions <fls@5senses.com>
Date: Thu, 29 Jan 1998 13:22:25 -0800

The alcohol does not ruin the Leica coatings?

Francesco


At 08:20 AM 1/29/98 +0000, dannyg1 wrote:
>> I used a Lens Pen yesterday to clean the front element on some Leica and
>> Zeiss glass.  I didn't have any problems at all, even though I had to press
>> down fairly hard to remove the guano.  Go for it.
>
>I own some older Kodak Ektar/Wollensak lenses for my Graflex cameras and,
if the 
>'50s Leica lenses have the same coating type, it is extraordinarily
fragile and scratches 
>*far* more easily than any modern coating I know of. I would never use
anything on 
>those coatings that required me to "press hard" and hope you'll consider
using 
>extreme caution when considering cleaning methods. 
>
>For my 50's lenses, I use Q-tips and 91% isopropyl alcohol and almost zero
pressure. 
>After a microfiber cloth made many fine coating scratches, I had to find a
way that 
>worked and the above was the only way I've found that cleans to perfection
and never 
>scratches.
>
>Danny Gonzalez
> 


Francesco Sanfilippo,
Five Senses Productions
webmaster@5senses.com

http://www.5senses.com/