Perhaps we can give this thread a slightly different focus, a little away from Cosina and Zeiss. Which manufacturer do you think will be the first to produce a full format digital camera, with a focusing viewfinder (not just a rear LCD), that accepts the vast majority of M-mount lenses? I'm not insisting that it be a rangefinder camera; it might have an electronic viewfinder, for example. Of course, the camera should make a serious effort to combat non-telecentricity problems caused by the sensor and lens being particularly close.
What are the advantages that would accrue to a manufacturer from offering a camera like this? They may not include sales volume, but the company would enjoy a significant degree of attention from a particularly broad spectrum of photographers who take their work seriously. I think Samsung would benefit from that attention. Nettar
The only manufacturers that would have any interest in using the M-mount are those already offering M-mount lenses...Leica, Zeiss and CV.
New players so far tend to make their own mount...Samsung, Sony, u4/3.
If Nikon or Canon did a RF or EVIL as well, why would they need to support a competitor's mount?
With the Sony NEX, sensor size reaches APS-C within 2 years of u4/3 launch. FF cannot be so far behind.
Such manufacturers choose different lens mount/specifications to avoid the Leica problem of accommodating legacy lenses.
The u4/3 consortium chooses a flange to sensor distance of 20mm, and the Sony NEX 18mm, plenty of room for LTM or M-mount adapter makers...from CV to no-name brands.
External glass VF are abundantful. EVF are so far proprietary, but the connector socket is
open...or at least I have not read anything about it being proprietary. What is to stop someone using also the Epson VF or a finer chip to make a better VF?
[The Epson chip native pixel size is 12u...300u @ 1m is said to be the threshold of human visual acuity. This provides lots of room for magnification/FoV creativity. What about a 9u or 6u chip...soon?]