Archived posting to the Leica Users Group, 1998/11/25

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Subject: [Leica] Lens cleaning
Date: Wed, 25 Nov 1998 13:31:49 -0700

>>There is no magic in cleaning a lens. A clean soft cloth. Chamois.
>>Microcloth. Underwear. Whatever.

Not to inflame, but "Whatever" as you state above is not very smart. The
most important thing with regards to the cleaning cloth is that IT MUST BE

>>A little breath, or even a dab of ROR.
>>Then wipe until you are satisfied that it is clean. Look at reflected
>>off of the surface to see if you left any streaks. A greasy fingerprint
>>leave a streak. ROR (Residual Oil Remover) will make quick work of any
>>greasy deposit on your lens. No magic. Just no sand or other grit. If you
>>suspect grit, use compressed air and/or a brush first.

Second issue is you must brush off any grit you might suspect before you
start any cleaning. Small particles you can't see can scratch your optics.
Cleaning a lens is not brain surgery and not too difficult. People get into
trouble because they do it improperly or they do it too much and too often.