Archived posting to the Leica Users Group, 2006/11/14

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Subject: [Leica] Voigtlander 50/2 Heliar lens
From: pswango at att.net (Phil Swango)
Date: Tue Nov 14 10:15:47 2006
 
Stephen Gandy wrote:
"the 50/2 Heliar is really unusual for an f/2 lens because it has only
five elements. "

Stephen, don't the Sonnar designs have 5 elements too?  I have a 50mm f/2
Jupiter that has 5 elements in three groups (triplet) as I understand it.
Is the Heliar also derived from a triplet or is it in the double Gauss
family?



-- 
Phil Swango
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