Archived posting to the Leica Users Group, 2014/04/25
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]No, a shorter register and wider mount both make designing lenses easier and possibly less expensive. Large rear elements help with wideangles; especially fast wideangles. Designs can be closer to telecentric, so that the rays hitting the sensors in the corners can be closer to perpendicular to the sensor plan. Henning On 2014-04-25, at 8:50 AM, Phong <leicaphong at gmail.com> wrote: > Henning, > >>> Only if you have a shorter register and a wider mount, optical > possibilities are increased. > > Would a shorter register impose more challenges to the design of wide-angle > lenses, given the smaller angle of incidence to the edges and corners of > the image circle ? > > - Phong > > > > > On Fri, Apr 25, 2014 at 11:42 AM, Henning Wulff <henningw at > archiphoto.com>wrote: > >> No, and the digital M's all have a bit of that already. Only if you have a >> shorter register and a wider mount, optical possibilities are increased, >> body plus lens thickness can be decreased and you can make a digital body >> that can use manual and autofocus lenses equally well. Or you could have a >> body designed primarily for autofocus use, and you could have a body >> designed for optical rangefinder use and they could use the same lenses. >> Aperture control could be on the body, or the lenses for full frame use. >> >> >> On 2014-04-24, at 7:53 PM, Doug Herr <wildlightphoto at earthlink.net> >> wrote: >> >>> Henning Wulff wrote: >>> >>>>>> >>> Yes, Leica has had a few areas to struggle over in becoming a digital >> camera manufacturer. One of them was the thickness of the camera. I think >> most film M camera users would like a digital M the thickness of an M4, >> but >> that won't happen with the sensor, filter pack and display screen adding >> to >> the thickness. >>> <<< >>> >>> Is there anything wrong with a digital body the same thickness as the M4 >> with the lens mount protruding to provide the mount register distance? >>> >> >> > > _______________________________________________ > Leica Users Group. > See http://leica-users.org/mailman/listinfo/lug for more information > Henning Wulff henningw at archiphoto.com