Archived posting to the Leica Users Group, 2000/04/21

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Subject: [Leica] Bad lens coatings
From: Evilboy <BernardDelgado@excite.com>
Date: Fri, 21 Apr 2000 14:46:20 -0700 (PDT)

Hi All,

I was checking out a non-leica LTM 28mm lens. The coating looked odd. Almost
rainbow variations in hue in circular pattern like a bullesye target.
Could this be oil onthe back of the front element, or a blistering of the
coating?

I've noticed that w/ some lenses, people put 4in1 oil on the helicals & it
works its way into the optics.

Any observations?






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