Archived posting to the Leica Users Group, 1998/08/12

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Subject: Re: [Leica] 75/1.4 versus 90/2.0
From: Eric Welch <>
Date: Wed, 12 Aug 1998 18:44:42 -0500

At 12:52 PM 8/12/98 -0400, you wrote:

>FWIW study of the element layout of the M75 M50 and R80 lenses shows them
>to be variants of the same design. In fact I have heard that the M75 and
>R80 are the same lens and the difference in marked focal length only
>academic. Seems unlikely to me but has anybody else heard this?

I don't think so. But I do know that they were designed for similar
performance characteristics, and that Leica succeeded. I would like to get
an 80 Summilux, but I'm hoping for a 90 Summicron ASPH APO. Then when I
need the speed, I'll use the 75, when I need the "ultimate" in image
quality, I'll use the 90. :-)
- -- 

Eric Welch
St. Joseph, MO

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