Archived posting to the Leica Users Group, 1999/06/02

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Subject: Re: [Leica] Glass absorbing UV-light
From: "A.H.SCHMIDT" <horsts@actek.com.au>
Date: Thu, 03 Jun 1999 16:25:28 +1000

Mikael von Numers wrote:

> Hi all
> Recently there was a discussion on the use of UV-filters on Leica
> lenses. I do not now how this thread ended as I have not read my LUG
> posts carefully for some weeks. Anyhow, today I glanced hrough my Leica
> fotografie issues (in german) from 1953 and found an article written by
> Walter Benser. He states that three lenses had built in UV-filters at
> that time (Eingebautes UV-Schutzfilter) because their glass absorbs
> UV-light. These lenses are: Summitar, Summarit and Summarex. Lenses of
> Elmar-type does not have this quality according to Benser. This article
> was in the Mars 1953 issue, that is two issues before the Summicron
> 1:2/5 cm was thoroghly presented om two pages.
>
> regards
> Mikael

  Thanks for this most interesting information.


Regards  Horst Schmidt