Archived posting to the Leica Users Group, 2004/09/29

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Subject: [Leica] rigid summar
From: Thinkofcole at (
Date: Wed Sep 29 10:09:37 2004

for Dan Colucci, Lager's Vol. II on Leica lenses  says the rigid Summar was 
codenamed "Sumar" and introduced in 1933 while  the collapsible Summar was 
codenamed "Sumus" and followed soon after with Agfa's  introduction of a new 
film process that required special filters.
    Lager adds that "factory records suggest" that "less  than two 
r'gid Summars were "completed.'' He also notes that Willy  Hahne, a Leica 
historian, in "10 Jahre Leica Historica,'' says that after Leica  ran an 
item in 
Leica Photography in 1934 offering to convert rigid Summars into  
Summars for $17.50 [usd], "hundreds" of lenses were converted and  "explains 
in part the scarcity of the rigid Summar.''
   Five full pages [with photos] on the Summar can be found  in Lager's 
Illustrated History, pages 37-41 [ lenses and hoods] -- bob  cole