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

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Subject: Vs: [Leica] Using screw to M adaptor ring ? Need Help
From: "Raimo Korhonen" <raimo.korhonen@pp2.inet.fi>
Date: Sun, 30 Jul 2000 16:49:35 +0200

My no-name adapter is slightly off, too - to the other direction. I have had no problems with vignetting or focus. I keep the adapter on the lens, normal Leica M rear cap fits.
All the best!
Raimo
photos at http://personal.inet.fi/private/raimo.korhonen

- -----Alkuperäinen viesti-----
Lähettäjä: John Coan <jcoan@alumni.duke.edu>
Vastaanottaja: leica-users@mejac.palo-alto.ca.us <leica-users@mejac.palo-alto.ca.us>
Päivä: 30. heinäkuuta 2000 10:06
Aihe: [Leica] Using screw to M adaptor ring ? Need Help


>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

Replies: Reply from Dante A Stella <dante@umich.edu> (Re: Vs: [Leica] Using screw to M adaptor ring ? Need Help)