[Leica] Some Somy A7R sample with M lenses

[john at mcmaster.co.nz (John McMaster)]

I would say that most (all?) SLR standard lenses are retrofocus. The Nikon F 
bayonet has a 46.5mm register distance, so a 50mm lens would need its 
optical centre 3.5mm from the bayonet......

john

> -----Original Message-----
> 
> The Zeiss people at Zeiss Day here a couple of weeks ago deny its a 
> retrofocal
> design like a traditional wide angle Zeiss. They seem to have gone "Kodak"
> with their naming using paper names to name slide projectors and so on. Any
> name which sells the most gets used on the next product regardless on what
> that might be.
> 
> I also think it would tricky to incorporate a retrofocal design into a 
> normal
> focal length lens. A retrofocal design  is in effect looking through a 
> telescope
> backwards. How to get a normal outa that?
> 
> Mark William Rabiner
> Photographer
> http://gallery.leica-users.org/v/lugalrabs/
> 
> On 11/22/13 12:04 PM, "Paul Roark" <roark.paul at gmail.com> wrote:
> 
> > John McMaster <john at mcmaster.co.nz> wrote:
> >
> > Their optics seem quite good (bar the zoom), but look to be standard
> > SLR
> >> style design ...
> >
> >
> > Notice that the new Zeiss super "Otus" 55mm is a "Distagon"
> > (retrofocus design).  What an irony.  I switched from SLR to
> > rangefinder largely to get away from the inferior retrofocus wide
> > angles, and now I may be forced back to them by the digital sensor's
> > needs.  (I have no plans to buy that Otun
> > lens.)
> >
> > Paul
> > www.PaulRoark.com
> >