Archived posting to the Leica Users Group, 1998/03/24

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Subject: [Leica] RF misaligned at infinity? / Answer / Moss
From: Leikon35 <Leikon35@aol.com>
Date: Tue, 24 Mar 1998 21:33:58 EST

 As I understand it, the pre M6 Leicas had a cam that when adjusted
 at infinity - would be accurate through-out the whole range.  This isn't
 true with the M6 whose frame lines also move on the diagonal but the
 horizontal adjustment is changed slightly when ever you alter the vert-
 ical.  As your focus is dependent on the horizontal alignment, it is best
 left to a competant service man to adjust, as he will have the proper
 equipment to do the job right.  Leica states that the rf alignment on the
 M6 is one of the most critical adjustments even though it can be done
 in 5 minutes by a Leica Service man.

 Marvin 
=========================================================
In a message dated 98-03-24 19:34:44 EST,  you write:
<< 
 When I set almost any of my M lenses at infinity, the rangefinder shows
 objects at infinity to be just ever so slightly out of alignment.  I mean
 really slightly.  This happens with both of my M6s (one standard, one HM),
 as well as my Mamiya 7 and an old Canon G-III rangefinder I've had for ages.
 My friend's M6 does the same thing.  Is this just normal for rangefinder
 cameras?  And if so, what do you trust for an infinity shot -- the lens set
 at infinity, or backing off the focus just a bit to line up the ghost images
 in the rangefinder patch?
 
 --Jim Laurel
  >>