Archived posting to the Leica Users Group, 2018/12/03

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Subject: [Leica] LTM to M adapter doesn't quite work
From: mak at teleport.com (Mark Kronquist)
Date: Mon, 3 Dec 2018 20:10:41 -0800
References: <8661181e-2dcc-b52e-aba6-c1996ddaa37f@gmail.com>

I?d just buy a new adapter. I use a slug of them Leica and third party and 
have not had an issue with Film or Digital M cameras 


> On Dec 3, 2018, at 7:10 PM, Peter Klein via LUG <lug at leica-users.org> 
> wrote:
> 
> I was checking various lenses on my M10-P today, and discovered that one 
> of my LTM to M adapters doesn't quite work.  It's a 28/90 adapter, not 
> encodable, probably Voigtlander, but made before they branded them.  It 
> has worked well on my previous Leicas, both film and digital. It was 
> always a little more reluctant to click into place than my other LTM/M 
> adapters, and I think that may be the problem.
> 
> On the M10-P, the adapter mounts, and the lens selector lever moves into 
> position. The rangefinder appears to focus. But the camera's lighted 
> framelines never appear.  And when I try to take a shot or go into LIve 
> View, the camera's LDC screen tells me that no lens is mounted.  I've also 
> seen a message in the viewfinder that looks like "bc."
> 
> This happens only with this one specific adapter, no matter what lens is 
> attached to it.  My guess is that it is not quite turning far enough, and 
> something is not happening that the camera tests for its "Is a lens 
> mounted?" routine.
> 
> Could I remedy this problem by filing something down slightly on the 
> adapter? (Probably the stop that halts the lens from turning further when 
> mounting).  Can anyone point me to the place to file, or an article that 
> describes it?   And would  be advisable, or should I just spring for a new 
> adapter to avoid messing something up in the camera?
> 
> --Peter
> 
> 
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Replies: Reply from don.dory at gmail.com (Don Dory) ([Leica] LTM to M adapter doesn't quite work)
In reply to: Message from boulanger.croissant at gmail.com (Peter Klein) ([Leica] LTM to M adapter doesn't quite work)