Nikon D5 has a
21.0MP Full frame (35.8 x 23.9 mm ) sized CMOS sensor and features Expeed 5 processor. On the other hand, Canon 1D X II has a
20.0MP Full frame (36 x 24 mm ) sized CMOS sensor and features Dual DIGIC 6+ processor.
Below you can see the D5 and 1D X MII sensor size comparison.
Sensor Size and Resolution Comparison image of Nikon D5 and Canon 1D X II Cameras
Nikon D5 and Canon 1D X II have almost the same sensor size, so neither of them has any significant advantage over the other in terms of providing control over depth of field when used with the same focal length and aperture.
DxOMark Sensor Scores
At Camera Decision, we also look at Dxo Mark sensors when available as we think it is a good indicator of image quality.
Model
Overall
Color Depth
Dynamic Range
Low-light ISO
Nikon D5
88
25.1 bits
12.3 Evs
2434 ISO
Canon 1D X II
88
24.1 bits
13.5 Evs
3207 ISO
Sensor size sets the circle of confusion, so it drives how much depth of field each
of these bodies gives you at a given aperture. You can calculate it exactly for the
Nikon D5
or the
Canon 1D X II ,
including hyperfocal distance.