Archived posting to the Leica Users Group, 2012/05/26

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Subject: [Leica] IMG: FF +
From: benedenia at gmail.com (Marty Deveney)
Date: Sat, 26 May 2012 17:30:26 +0930
References: <CAAsXt4OnSRAEfEaFZYhKp55UjMQohGJwc1M7qWNov8mERsfQiw@mail.gmail.com> <004301cd3af2$19107ce0$4b3176a0$@chiaroscuro.co.nz> <B9C33773-401F-4ED1-8F20-4F789CB87218@gmail.com> <004401cd3af5$842024b0$8c606e10$@chiaroscuro.co.nz> <28CFA2B5-E6A7-4ECE-9A86-F3EC09BEC2ED@gmail.com>

On Sat, May 26, 2012 at 2:01 PM, Bob Adler <rgacpa at gmail.com> wrote:
> Not fun...
> It will be very interesting to learn if the increased resolution of the MM 
> causes a slew of owners to recalibrate...

I am strongly of the opinion that *any* fast pre-digital Leica M glass
_must_ be focus calibrated to be useable wide open on an M8, 9, MM etc
- *any* digital Leica.  The tolerances required to focus accurately on
a sensor are tighter and Leica developed methods to meet them.

Newer glass is less likely to need this, but I have also noticed that
with use everything wanders and needs periodic re-calibration.  I send
everything off every ~2 years, or else if my periodic checks show
something has changed.

Marty


> Good luck John.
>
> Sent via iiiPad
> Bob Adler
> Redwood City, CA
>
> On May 25, 2012, at 9:10 PM, "John McMaster" <john at chiaroscuro.co.nz> 
> wrote:
>
>> Just the second, so far.... Was way off back focussing when bought, 6-bit
>> and calibration in Solms and now gone to someone in NZ. My 75mm Summilux 
>> has
>> been back at Solms for four weeks so far (still back focussing after
>> 6-bit/factory calibration) so trying a local calibration...
>>
>> john
>>
>> -----Original Message-----
>>
>> Is this the 3rd time?
>>
>> Sent via iiiPad
>> Bob Adler
>> Redwood City, CA
>>
>> On May 25, 2012, at 8:46 PM, "John McMaster" <john at chiaroscuro.co.nz> 
>> wrote:
>>
>>> Certainly looks good on the cat shot, mine was front focussing after
>>> its trip to Solms so has been sent off again :-(
>>>
>>> john
>>>
>>> -----Original Message-----
>>>
>>> Finally a few minutes to play with the recently calibrated nocti:
>>>
>>>> From our garden:
>>> http://gallery.leica-users.org/v/rgacpa_HI/20120525-L1000656.jpg.html
>>>
>>> Millie is back with her unique world view and attitude:
>>> http://gallery.leica-users.org/v/rgacpa_HI/20120525-L1000646.jpg.html
>>>
>>> Seems to be well calibrated. Hope you enjoy, Bob
>>>
>>> --
>>> Bob Adler
>>>
>>
>>
>>
>> _______________________________________________
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>
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Replies: Reply from rgacpa at gmail.com (Robert Adler) ([Leica] IMG: FF +)
In reply to: Message from rgacpa at gmail.com (Robert Adler) ([Leica] IMG: FF +)
Message from john at chiaroscuro.co.nz (John McMaster) ([Leica] IMG: FF +)
Message from rgacpa at gmail.com (Bob Adler) ([Leica] IMG: FF +)
Message from john at chiaroscuro.co.nz (John McMaster) ([Leica] IMG: FF +)
Message from rgacpa at gmail.com (Bob Adler) ([Leica] IMG: FF +)