I suspect this camera is going to under-spec but outperform the D810, and performance at ISO 100 is what matters to me. More than a few times I took a hard look at the D800. Canon glass kept me in place, not because of investment but because of the EF mount and Canon's consistent forward progress with lenses. When I started shooting full frame, Nikon didn't even have a line of pro-grade fixed f/4 lenses. Nikon caught up option-wise, but I see the EF mount as more capable of handling the advanced lens designs necessary for digital 35mm to bridge the gap to medium format.