Archived posting to the Leica Users Group, 2002/04/03

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Subject: Re: [Leica] Telyt 400/5.6
From: Stan Yoder <vze2myh5@verizon.net>
Date: Wed, 03 Apr 2002 18:29:54 -0500
References: <200204032033.MAA01410@mejac.palo-alto.ca.us>

Frank F. wrote:

I just read that this lens is a 2 element design....     It also has a
wonderful following among the knowledgeable.  If the lens is truly a 2
element design, part of te successful imaging quality of the lens is due to
the limited air to air spacing.. Each lens to air space acts as a parial
mirror, causing loss of contrast and reducing imaging accuracy.  The succes
to some extent, is due to its very simple design.

But aren't the Telyt 400s simple cemented doublets with no internal glass-air surfaces? Or is that
what you were getting at, Frank?

Stan Yoder
Pittsburgh
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