Archived posting to the Leica Users Group, 2000/11/09

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Subject: Re: [Leica] 40mm
From: John Collier <>
Date: Thu, 09 Nov 2000 13:14:50 -0700

Yes, there may be a problem. It is a great lens but was designed for the
Leitz/Minolta CL. The CL lenses had a different, steeper lens focusing cam
than normal M and CLE lenses. The CL camera, which does not have to focus
f1.0 lenses, has a simpler, shorter based rangefinder mechanism. The M
cameras' rangefinder is fine tuned by adjusting the length of the roller arm
which means that it can be in a slightly different position horizontally
from one camera to another. The short ending to the long story is that quite
often the M and CLE camera's rangefinder will not couple to a CL lens
correctly. Point the combination at a point at least two miles away and, if
everything lines up OK at infinity, it should be fine. If it does couple
correctly, bear in mind that it may not work with your next/other body(ies).

John Collier

> From: Guy Bennett <>
> does the summicron c focus properly on the m camera?