Canon 1D X III has a
20.0MP Full frame (36 x 24 mm ) sized CMOS sensor and features Digic X processor. On the other hand, Sony A9 II has a
24.0MP Full frame (35.6 x 23.8 mm ) sized Stacked BSI-CMOS sensor and features BIONZ X processor.
Below you can see the 1D X MIII and A9 Mark II sensor size comparison.
Sensor Size and Resolution Comparison image of Canon 1D X III and Sony A9 II Cameras
Canon 1D X III and Sony A9 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
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. Canon 1D X III and Sony A9 II sensors have been tested by DxO and the results show that A9 Mark II has a better overall score of 93, 2 points higher compared to 1D X MIII's score of 91.
Model
Overall
Color Depth
Dynamic Range
Low-light ISO
Canon 1D X III
91
24.2 bits
14.5 Evs
3248 ISO
Sony A9 II
93
25.0 bits
14.0 Evs
3434 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
Canon 1D X III
or the
Sony A9 II ,
including hyperfocal distance.
