Nikon D4 has a
16.0MP Full frame (36 x 23.9 mm ) sized CMOS sensor and features Expeed 3 processor. On the other hand, Canon 1D X III has a
20.0MP Full frame (36 x 24 mm ) sized CMOS sensor and features Digic X processor.
Below you can see the D4 and 1D X MIII sensor size comparison.
Sensor Size and Resolution Comparison image of Nikon D4 and Canon 1D X III Cameras
Nikon D4 and Canon 1D X III 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
DxOMark is a benchmark that scientifically assesses image quality of camera sensors. It scores camera sensors for color depth (DXO Portrait), dynamic range (DXO Landscape) and low-light sensitivity (DXO Sports), and also gives them an overall score. Nikon D4 and Canon 1D X III sensors have been tested by DxO and the results show that 1D X MIII has a better overall score of 91, 2 points higher compared to D4's score of 89.
Model
Overall
Color Depth
Dynamic Range
Low-light ISO
Nikon D4
89
24.7 bits
13.1 Evs
2965 ISO
Canon 1D X III
91
24.2 bits
14.5 Evs
3248 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 D4
or the
Canon 1D X III ,
including hyperfocal distance.
