I think it is difficult to make pronouncements one way or the other.
Often it comes down to personal needs and aesthetic preferences … do you want/desire/need XX meg in a 3/4 or 2/3 format, and/or XX meg in 35mm size or a larger MFD sensor (and their attendant differences)? Do you prefer a traditional OVF or an EVF? Do you really need/use high ISO or not? All academic arguments aside, do you personally like CCD rendering or CMOS?
43 meg A7R-II, 50 meg Canon, 40 meg CCD, 50 meg CMOS?
Personally, I've always liked working with a bigger camera for a lot of the work I did. Since retiring, those "likes" now hold less sway over my preferences. However, try as I might, I can't seem to connect with the Sony A7 series cameras, and my A7R is the least liked/preferred/used camera of all those I've worked with for the past decade. I fear the A7R-II will be just more of the same. This isn't based on paper spec's or doubting the ability of any camera … I just do not like it for any of the reasons I make photographs.
There is a place for each choice, and hopefully there will be those choices for some years to come. The only disappointment I see on the horizon is the demise of the CCD sensor in any format … which is why I snatched up a new Leica S(006) while I could. If I didn't have that and 6 CS lenses, then the Pentax 645D would be attractive at those prices.
IMHO.
- Marc