Grahm I really appreciate your honesty about the a7r. There are obviously negative issues with the a7r and you are not trying to conceal them because you bought the camera. Thank you!
The 2 points above are interesting to me. You state that DR is the same as Canon's 5D3 and 6D (surprising to me actually)...yet the IQ is levels above. can you elaborate on that?
I don't state the DR is identical actually, but rather it's indistinguishable. The A7R has a DR of 14.4, Canon 5D3/6D is around 12.1 or so. But with that on paper, I'm seeing the same real world results.
IQ on the A7R is literally magnitudes better in terms of sharpness with the exact same L lenses. With the resolution of the Sony A7R downscaled to the resolution range of the 5D3/6D it's still quite a bit better, and I'm talking specifically in terms of sharpness and clarity. The sensor doesn't out-resolve the optics as people have said it might. In fact, even my $17 1962 Canon FL lens resolves sharper than this sensor can. In other words, there's no bottleneck on optic quality just because the sensor has a high MP count.
I'm not sure why the image quality would be significantly better, but if I had to guess I'd say it has something to do with sensor design, no low-pass optical filter or perhaps both. This would of course be up to the experts to figure out! : )
It's worth mentioning that the results we see here would be replicated on the Nikon D800E, as Sony designs and fabricates that sensor. However with the flange distance on a Nikon being what it is the test between the same Canon lens on both bodies wouldn't be possible - now it is.