Archived posting to the Leica Users Group, 2012/04/15

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Subject: [Leica] Possible lens adjustments
From: chris at chriscrawfordphoto.com (Chris Crawford)
Date: Sun, 15 Apr 2012 18:08:49 -0400

If it is inconsistent across the distance range, it needs the cam
machined. Don Goldberg can do it, he did it to my 50mm Summicron. I think
it cost $90

-- 
Chris Crawford
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On 4/15/12 5:28 PM, "John McMaster" <john at mcmaster.co.nz> wrote:

>Just what is possible with tweaking?
>
>I tested my 75mm Summilux yesterday, tripod and 1.4x magnifier, at
>f1.4-f8 in full stops. I am more interested in the wide open focus.
>
>It is spot on 10m to infinity.
>
>It back focusses greatly 3m to 8m (+10cm)
>
>It back focusses less so <3m
>
>Will it ever focus correctly at all distances?
>Will I have to choose an aperture and distance to get optimum calibration
>and the rest all fit around that?
>
>thanks
>
>john
>
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Replies: Reply from john at mcmaster.co.nz (John McMaster) ([Leica] Possible lens adjustments)
In reply to: Message from john at mcmaster.co.nz (John McMaster) ([Leica] Possible lens adjustments)