Archived posting to the Leica Users Group, 2000/07/30

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Subject: Re: [Leica] Using screw to M adaptor ring ? Need Help
From: Nathan Wajsman <wajsman@webshuttle.ch>
Date: Sun, 30 Jul 2000 11:04:52 +0200
References: <000501bff9c7$d5816b60$59121840@computer> <3983DC1D.A65A84FE@alumni.duke.edu>

John,

Jean-Claude has already answered your second question. As for the first, I
keep the adapter ring permanently screwed onto the Heliar and just put the
lens on the M like any M lens. I have never encountered any problems with
this procedure.

Nathan

John Coan wrote:

> I recently acquired a used Voigtlaender 15mm screw mount, and purchased
> a Voigtlaender adapter ring.  I have a few questions that I hope the
> group can help me out with.
>
> 1.  The instructions say put the ring on the M body and lock it in, then
> screw in the lens.  I always figured I would leave the ring on the lens,
> and bayonet the lens on and off like a normal lens.  Any problem with
> that?
>
> 2.  When screwed all the way in, the focus indicator mark which should
> be centered at the top is a few degrees to the left (when looking
> down).  Sort of like it is screwed in a little bit too much. Will this
> have any practical effect on focus?  I've never owned a screw mount
> Leica and do not know how precisely the threads are cut to make the lens
> line up perfectly when screwed in tightly. On my combo, the lens isn't
> tight unless screwed in a little past the mark.
>
> Thanks in advance for the collective wisdom of the group.
>
> John

- --
Nathan Wajsman
Herrliberg (ZH), Switzerland

e-mail: wajsman@webshuttle.ch

General photo site: http://belgiangator.tripod.com/
Belgium photo site: http://members.xoom.com/wajsman/
Motorcycle site: http://www.geocities.com/MotorCity/Downs/1704/

In reply to: Message from "Sal DiMarco,Jr." <sdmp007@pressroom.com> ([Leica] Re: 280mm f/2.8 Palm grip)
Message from John Coan <jcoan@alumni.duke.edu> ([Leica] Using screw to M adaptor ring ? Need Help)