Archived posting to the Leica Users Group, 2001/10/16

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Subject: [Leica] Re: filters or scratches (Clear Plastic Tape / Camera destruction)
From: Jim Brick <>
Date: Tue, 16 Oct 2001 09:26:12 -0700

At 09:36 AM 10/16/2001 +0200, Mārtiņš Zelmenis wrote:

>Dear friends,
>I can't get one thing together: it's been continuously stated that <lens
>front/rear element scratches don't visibly influence image quality> - am I
>right? And why is it presumed that quality filters (Leica, B+W, et al.) do
>influence such a quality??

It is the quality of the filter glass that is important. Leica, B+W, and 
Heliopan use the highest quality optical glass, rather than window glass or 
plastic, as some of the cheapies use.


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