Archived posting to the Leica Users Group, 1998/06/06

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Subject: RE: [Leica] Tri-Elmar focusing
From: "Shahinian, Vahan" <>
Date: Sat, 6 Jun 1998 18:02:04 +0100


That's an interesting observation. I have seen the same thing. I'll try
your suggestion. I seem to remember reading or hearing that the focus
mechanism is not a standard helicoid arrangement, but instead uses a
synthetic cam.


- -----Original Message-----

Vahan, I have noticed that if I store the lens with the distance scale
infinity, it catches at a point lust short of infinity when I start to
use it.
I now store the lens with the distance scale at the minimum focusing
and have no problem.  I theorize that the rubber like substrate of the
focusing ring has a short term memory that retains a small dip where the
is set.

Tom Shea