Canon 5D MIV has a
30.0MP Full frame (36 x 24 mm ) sized CMOS sensor and features Digic 6+ processor. On the other hand, Sony A7S II has a
12.0MP Full frame (35.6 x 23.8 mm ) sized CMOS sensor and features Bionz X processor.
Canon 5D MIV's sensor provides 18MP more than Sony A7S II's sensor, which gives a significant advantage in real life. You can print your images larger or crop more freely.
On the other hand, please keep in mind that Max sensor resolution is not the only determinant of resolving power. Factors such as the optical elements, low pass filter, pixel size and sensor technology also affects the final resolution of the captured image.
Below you can see the 5D MIV and A7S II sensor size comparison.
Sensor Size and Resolution Comparison image of Canon 5D MIV and Sony A7S II Cameras
Canon 5D MIV and Sony A7S 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
Both Canon 5D MIV and Sony A7S II sensors have been tested by DxoMark. DxoMark 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. Of the two cameras that we are comparing, 5D MIV has scored 91, 6 points higher than A7S II.
Model
Overall
Color Depth
Dynamic Range
Low-light ISO
Canon 5D MIV
91
24.8 bits
13.6 Evs
2995 ISO
Sony A7S II
85
23.6 bits
13.3 Evs
2993 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 5D MIV
or the
Sony A7S II ,
including hyperfocal distance.
