Archived posting to the Leica Users Group, 2014/10/26

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Subject: [Leica] Leica M lens MTFs
From: photo at frozenlight.eu (Nathan Wajsman)
Date: Mon, 27 Oct 2014 06:07:10 +0100
References: <CAJ3Pgh6CzR+seecKXmvBh8_Z0KLYPXqfM5Z_As3OpVvu03+rUw@mail.gmail.com> <D072A51C.2A1BF%mark@rabinergroup.com> <CAJ3Pgh59SGPbQ4Z-ws896W2VT9QvzcqghoX6UNrrzbkwZhsRYQ@mail.gmail.com> <85E350FC-9BCE-4F09-88BA-4505F9633BB8@gmail.com> <CAJ3Pgh5PnJbFCnJbGC8LHKvDsN3OixuBRxctvBJbYTqWGydXKg@mail.gmail.com> <80F9701439F20347874CE5E4E03C22E9010EA2A286@WhizzMAIL01.whizz.org>

And then there those who don?t care about charts and just take pictures :-)

Cheers,
Nathan

Nathan Wajsman

Alicante, Spain
http://www.frozenlight.eu
http://www.greatpix.eu
PICTURE OF THE WEEK: http://www.fotocycle.dk/paws
Blog: http://nathansmusings.wordpress.com/

Cycling: http://www.crazyguyonabike.com/belgiangator

YNWA













On 27 Oct 2014, at 01:03, John McMaster <john at mcmaster.co.nz> wrote:

> I think that they admitted that the 35mm f2.5 had an aspheric element but 
> did not publicise it. They seem tardy with MTFs currently, there is not 
> one for the 100mm S APO yet either.
> 
> john
> 
> -----Original Message-----
> 
> 
> Thanks, that's a good set of data sheets.
> 
> My reading of the various postings regarding the new Summarits suggests 
> that the 35mm might actually have a new formula, with an aspherical 
> element added, but we'll see.
> 
> On another forum someone had asked about the 75 2.5 I use with the Sony 
> a7r.  I had a copy of the old PDF that I posted for him, but I could not 
> find the official ones where I thought they used to be.
> 
> I wonder how Leica evaluates its sales into the non-Leica camera base.  
> The WATE and everything above 50 mm is better than anything else on the 
> Sony (unless perhaps one has a porter to carry around the new huge Zeiss 
> top end).
> 
> Paul
> www.PaulRoark.com
> 
> On Sun, Oct 26, 2014 at 1:09 PM, Henning Wulff <hjwulff at gmail.com> 
> wrote:
> 
>> Forgot to mention: the 'new' f/2.4 Summarits are rumoured to be the 
>> same optically as the f/2.5's, but in new mounts. I haven't been able 
>> to verify that, but it makes sense as the 2 Summarits I tried were a 
>> bit fast for f/2.5's.
>> 
>> Henning
>> 
>> 
>> On 2014-10-26, at 11:31 AM, Paul Roark <roark.paul at gmail.com> wrote:
>> 
>>> That appears to be old downloads.  There is a new line or Summarits 
>>> -
>> f/2.4
>>> - such as this one:
>>> 
>>> 
>> http://en.leica-camera.com/Photography/Leica-M/M-Lenses/Summarit-M-75m
>> m-f-2.4
>>> 
>>> I'm curious what they've done, like design wise, and whether they 
>>> have published new MTFs.
>>> 
>>> Paul
>>> www.PaulRoark.com
>>> 
>>> On Sun, Oct 26, 2014 at 10:18 AM, Mark Rabiner 
>>> <mark at rabinergroup.com>
>>> wrote:
>>> 
>>>> 
>>>> 
>> http://leica-camera.pl/wp-content/downloads/Summarit-M_35_mm_Technical
>> _Data_
>>>> en.pdf
>>>> 
>>>> http://leica-camera.pl/wp-content/downloads/
>>>> 
>>>> 
>>>> On 10/26/14 12:25 PM, "Paul Roark" <roark.paul at gmail.com> wrote:
>>>> 
>>>>> Is there any source of the MTFs for the new Summarits?  Leica 
>>>>> seems to
>>>> have
>>>>> changed its web pages and eliminated the PDFs I usually found there.
>>>>> 
>>>>> Thanks,
>>>>> 
>>>>> Paul
>>>>> www.PaulRoark.com
>>>>> 
> 
> 
> _______________________________________________
> Leica Users Group.
> See http://leica-users.org/mailman/listinfo/lug for more information
> 



In reply to: Message from roark.paul at gmail.com (Paul Roark) ([Leica] Leica M lens MTFs)
Message from mark at rabinergroup.com (Mark Rabiner) ([Leica] Leica M lens MTFs)
Message from roark.paul at gmail.com (Paul Roark) ([Leica] Leica M lens MTFs)
Message from hjwulff at gmail.com (Henning Wulff) ([Leica] Leica M lens MTFs)
Message from roark.paul at gmail.com (Paul Roark) ([Leica] Leica M lens MTFs)
Message from john at mcmaster.co.nz (John McMaster) ([Leica] Leica M lens MTFs)