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

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Subject: [Leica] Leica M lens MTFs
From: roark.paul at gmail.com (Paul Roark)
Date: Sun, 26 Oct 2014 13:45:27 -0700
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>

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-75mm-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
> >>
> >>
> >>
> >>
> >> --
> >> Mark William Rabiner
> >> Photographer
> >> http://gallery.leica-users.org/v/lugalrabs/
> >>
> >>
> >>
> >> _______________________________________________
> >> Leica Users Group.
> >> See http://leica-users.org/mailman/listinfo/lug for more information
> >>
> >
> > _______________________________________________
> > Leica Users Group.
> > See http://leica-users.org/mailman/listinfo/lug for more information
> >
>
>
> Henning Wulff
> hjwulff at gmail.com
>
>
>
>
>
> _______________________________________________
> Leica Users Group.
> See http://leica-users.org/mailman/listinfo/lug for more information
>


Replies: Reply from john at mcmaster.co.nz (John McMaster) ([Leica] Leica M lens MTFs)
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)