Archived posting to the Leica Users Group, 2000/07/26

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Subject: Re: [Leica] Peeling R4 Bayonet
From: John Collier <jbcollier@home.com>
Date: Wed, 26 Jul 2000 17:03:36 -0600

Yes there are tools and procedures to follow. On the Leica M you use a
special tool to check for the proper distance which involves using "gauge
set 56". Tolerances are +0.005 mm. to -0.01 mm. The lens mount can be
machined and then you have to carefully use an auto collimator to check for
parrallelism. I do not have an "R" manual but expect it is similar.

John Collier

> From: CapsTeeth@aol.com
> 
> In a message dated 7/26/00 1:31:12 PM Eastern Daylight Time,
> sdmp007@pressroom.com writes:
> 
> << CapsTeeth,
> Changing the bayonet mount yourself withOUT having the proper
> calibration tools is foolish. The flange distances are critical for sharp
> focus. >>
> 
> I've never changed an R lensmount, but I've done several Nikons and Leica M's
> and the mounts fit flush with the body casings with and the screws tighten
> into their threads until they are tight, just like rear lensmounts.  There
> aren't any provisions for "calibration".  I checked with Fargo Enterprises
> and they didn't seem to know what a "lens mount calibration tool" was.
> Perhaps Leica R cameras are different. 

Replies: Reply from "Miro Jurcevic" <miroj@ozemail.com.au> ([Leica] Re: Peeling R4 Bayonet)