Archived posting to the Leica Users Group, 2001/04/03

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Subject: Re: [Leica] Leica Users digest V19 #272
From: LRZeitlin@aol.com
Date: Tue, 3 Apr 2001 13:16:00 EDT

In a message dated 4/3/01 3:09:26 AM, Erwin writes:

<< It is remarkable that the idea that there is a significant trade-off 
between
 high contrast and low resolution still rides high in Leica lore. As far as I
 know no one who holds his view has ever presented demonstrable evidence or
 corroboratable measurements to prove this point. >>

Then Leica itself believes its old myth. I am holding in my hand a glossy 
information booklet entitled "Leica Lenses" published by Ernst Leitz GMBH 
Wetzlar/West Germany in 1969 (ref. no. VII/69/CY/Mi). In a chapter titled 
"Resolving and Contrast" the authors claim that the concepts of resolving 
power and contrast are not necessarily linked and offer photographic evidence 
that of the two, high contrast is more important for general photography.

The booklet was given to me by a Leica factory rep. in 1970 as an explanation 
of why Leica redesigned its lenses to emphasise contrast.

Erwin, this is not mythology. It is Leica's own history. Science is another 
matter.

Larry Zeitlin