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....and Retro-Focus
From: Marc James Small <msmall@roanoke.infi.net>
Date: Thu, 02 Sep 1999 16:17:58 -0400

At 03:47 PM 9/2/1999 -0400, Dan Post wrote:
>could they be taking the fact that the retro focus doesn't protrude so far
>into the body? After finding that the 80-200 / 4,5 Vario-Elmar stuck out too
>far in the back to go on my SL, I could well understand if they did it to
>make the  metering more accurate on a M lens?

Dan and I are discussing why Leica has chosen retrofocus designs on their
later wide-angles, something I was unaware of until that deep well of
knowledge, Eric Welch, pointed me towards it some years back.  

My Russar meters with my M6, and it is not a retrofocus design.  My
Orion-15 meters with my M6, and it is not a retrofocus design.  My 2.8/35
Jupiter-12 meters with my M6, and it is not a retrofocus design.

Also ich weiss ist nicht.

Marc

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