Archived posting to the Leica Users Group, 1999/09/02

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Subject: Re: [Leica] Comments on Russar 5,6/20 mm please....
From: Marc James Small <msmall@roanoke.infi.net>
Date: Thu, 02 Sep 1999 14:51:22 -0400

At 09:31 PM 9/1/1999 -0700, Ken Iisaka wrote:
>
>Well, an example of gem of a retrofocus 21mm is the venerable Elmarit-M 21mm
>and Elmarit-M ASPH 21mm.  If you look at the configuration, these superb
>lenses are technically of Retrofocus or inverted telephoto design.
>
>24mm ASPH, and the current 28mm are also Retrofocus.

Sure.  I was speaking in general terms.  A designer can do more without the
constraint of non-retrofocus parameters, but there are always exceptionally
good designs.  The missing Erwin Puts and I have had some lengthy
discussions about these designs, but I still don't know why Leica chose to
use retrofocus designs for them.

Marc

msmall@roanoke.infi.net  FAX:  +540/343-7315
Cha robh bas fir gun ghras fir!