Archived posting to the Leica Users Group, 1998/05/07

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Subject: Re: [Leica] Versions of 35 Summicron-M
From: Lucien <lucien@ubi.edu>
Date: Thu, 07 May 1998 20:51:46 +0100
 
Bud

>Were there four versions of the 35mm Summicron-M prior 
>to the ASPH version?

Yes
1 1958 Canada and Wetzlar (filter E-39)
 - Chrome for M2 = 11308 (SAWOO-MW)
 - Chrome RF for M3 = 11108
  1961
 - rare black for M2 = 11307 (SAWOO-M)
 - Rare black RF for M3 = 11104
2 1969 Canada + rare Wetzlar (filter E-39 + serie VII)
 - Black chrome 11309 
   (with protuding aperture control lever)
3 1970 (or 1973*) Canada (filter E-39 + serie VII**)
 - Black chrome 11309 
   (same code, new computation**, no protuding etc..)
  * according to first serial nr = 1970
    according to litterature = 1973
  ** Some rare lens accept only serie VII
  *** no draft of the new lens design available, debatable.
4 1979 Canada + Germany (filter E-39)
 - Black chrome 11310
  1992 Germany
 - Chrome 11311
5 1997 Germany
 - Black Asph.
 - Chrome Asph.

>What was the last version produced in Canada/Wetzlar?

In black Canada, then Germany.
In Chrome in Germany only.

>If there were four versions, what was the difference 
>between version 3 and version 4?

Computation, design, lens hood etc.

Lucien