Archived posting to the Leica Users Group, 1998/03/29

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Subject: Re: [Leica] 50mm Optical Question
Date: Sun, 29 Mar 1998 16:31:17 -0600

First versions.
Bud Cook - Proud owner of two Mercedes:-)
- -----Original Message-----
From: Marc James Small <>
To: <>
Date: Sunday, March 29, 1998 2:53 PM
Subject: Re: [Leica] 50mm Optical Question

>At 10:54 AM 3/29/98 -0600, Bud Cook wrote:
>>Aren't the 90mm SummicronR, 135mm ElmaritR and 180mm ElmaritR modified
>>triplets (as is the Nikon 105 2.5)?   I've read somewhere that these
>>were modified triplets and they look like Sonnars to me.
>First, which version of these lenses are you speaking of?  All have been
>Second, Leitz has used the 'modified triplet' as the basis for a number of
>designs, but that doesn't make them 'Sonnars', as this name refers to a
>specific modified-triplet formula.  A parallel would be to say that
>Mercedes ripped off General Motors because they both built "cars".
>  FAX:  +540/343-7315
>Cha robh bas fir gun ghras fir!