Random Orbits said:
Don Haines said:
There is absolutely nothing to say that a FF mirrorless could not be in a similar body style to that of a 5D3... we are talking tried and true ergonomics here..... make it too small and you don't fit properly in people's hands (BIG problem with larger lenses), you loose real estate to mount controls, and the smaller body has less heat-sinking abilities.....
I hope they come out with an elegant solution to do something with the open space of the mirrorbox assembly. Perhaps it makes more sense to introduce pro-mirrorless in the same form factor and flange distance as the current EOS cameras. The fast glass won't be any smaller or lighter (look at the 35 f/1.4 for the a7), so you might gain a benefit for ultrawide/consumer zooms with smaller max apertures but for those that bring several lenses to span a wide focal length range, that benefit is marginal.
Some Sony FE lenses are in fact quite dramatically smaller than their DSLR counterparts, taking into account the front element to sensor length (Sony 28mm f2 for example - and it's brighter, and cheaper ! And doesn't seem to perform that much worse than the Canon), and, in the case of Canon, which EF mount is entirely electronic anyway (unlike Nikon, that for some reason still continues to release lenses in 2015 with a mechanical aperture lever), adapting EF lenses shouldn't be too difficult. In fact it's already been done. Perhaps people could find adapters annoying to use in some scenarios, and perhaps there could be some tolerancing issues with fast lenses and high resolution sensors.
In addition, it isn't because it's difficult to fully exploit the benefits of a shorter flange distance in 2015 that it will still be the case in 2035. Perhaps by this time sensors and filter stacks will be more accepting of sharper ray angles, who knows ?
Keeping the EF mount looks like a very good short term solution - and given that any misstep could be deadly it might be a good survival approach. Long term, I'm not sure it's the best idea ever.
But I don't think the EF-M mount is brilliant as well. What if sensor yields increase and medium format gets cheaper and cheaper ? What if cinema wants to use 65mm-ish sensors, like the Alexa 65 ?
I think a shorter flange (but not too short) distance mount with a rather widish throat diameter, at least as wide as the EF mount (if you pull a Sony, you can put the Pentax 645Z's sensor in the current EF mount throat diameter) would be more future-proof than the current EF or EF-M mounts, either for photo or video.