Archived posting to the Leica Users Group, 1997/03/23

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Subject: Re: Elmar 90mm f4
From: Marc James Small <msmall@roanoke.infi.net>
Date: Sun, 23 Mar 1997 20:52:01 -0500

At 03:17 PM 3/23/97 -0500, Steve wrote:
>The Elmar 90 f4 was made in both screw mount and M versions.   I have an
>Elmar M made about 1960 or so and wonder if it is identical mechanically to
>the screw mount versions.  If it is, could I then unscrew the lens from the
>barrel and mount it in a barrel designed for a scew mount camera?  Would it
>focus properly on a IIIF?

There are actually TWO answers.

The book solution is no, it won't work, as the lens heads are individually
fitted to their focusing mounts.

The real-world solution is that yes, it can be done, and in MOST cases, the
mix-and-matched lens will focus with acceptable accuracy.

Marc


Marc James Small
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