Archived posting to the Leica Users Group, 2001/02/27

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Subject: Re: [Leica] Are UV filters "safety glasses" for the lens?
From: "Dante A. Stella" <dante@umich.edu>
Date: Tue, 27 Feb 2001 19:45:41 -0500
References: <NABBLIJOIFAICKBIEPJJCEFOIHAA.austin@darkroom.com>

Which is, of course, why the pre-ASPH Summilux 35/1.4 used this method to mount
Series VII filters.

Austin Franklin wrote:

> > Without risking a public opinion on the merits of filter use, I
> > recall that
> > when I bought my first 35 Summilux (black M3 model, would that I had it
> > today...) I was annoyed by the lack of a filter thread, and the need to
> > insert a filter in the hood. I quickly came to appreciate the
> > "instant off"
> > filter, though.
>
> One of the issues with filters is that their surfaces need to be
> perpendicular to the axis of the lense, and I don't know how critical it is,
> but possibly that type of mount may not be very 'accurate'.

In reply to: Message from "Austin Franklin" <austin@darkroom.com> (RE: [Leica] Are UV filters "safety glasses" for the lens?)