Archived posting to the Leica Users Group, 2000/04/11

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Subject: Vs: [Leica] Re: Old or new Summicron tested?
From: "Raimo Korhonen" <raimo.korhonen@pp2.inet.fi>
Date: Wed, 12 Apr 2000 00:16:55 +0200

The DR is optically identical to the "rigid" Summicron.
All the best!
Raimo
photos at http://personal.inet.fi/private/raimo.korhonen

- -----Alkuperäinen viesti-----
Lähettäjä: Stephen Gandy <Stephen@CameraQuest.com>
Vastaanottaja: leica-users@mejac.palo-alto.ca.us <leica-users@mejac.palo-alto.ca.us>
Päivä: 11. huhtikuuta 2000 21:05
Aihe: Re: [Leica] Re: Old or new Summicron tested?


>Hi Larry,
>
>I have close to a complete set of Moderns, they form the backbone of my Photo
>Library.  From time to time they refer to the test, sometimes in "Too Hot to
>Handle."   It was indeed the DR.
>
>Stephen Gandy
>
>LRZeitlin@aol.com wrote:
>
>> Steven Gandy writes <<the Summicron Modern tested out at 105 l/mm was a 50
>> Dual Range>>
>>
>> Steven,
>>
>> Your information may be better than mine -and if so, I stand corrected.
>> However, the Modern Photography lens test article of October 1978, which I
>> have before me, makes no mention of the specific type of Summicron lens used
>> to reach 105 l/mm. A decade before the article appeared, Leica had changed
>> the formula for the 50 mm Summicron emphasising contrast and even
>> illumination over resolution in the newer 6 element model. Since I was
>> curious about which Summicron was used, I called one of the article’s
>> authors, Bennett Sherman. He told me that since the purpose was to illustrate
>> the highest resolution that could be achieved, they fudged by using the older
>> 7 element lens. It was a long time ago. I wasn’t there when the lenses were
>> tested and certainly my recollection would be classified as hearsay by one of
>> the many LUG lawyers. My personal experience is that the older Summicron is
>> marginally sharper than the newer one so I would not be surprised to find
>> that it was the one used.
>>
>> Regards,   LarryZ
>