Nikon Z6 II has a
25.0MP Full frame (35.9 x 23.9 mm ) sized BSI-CMOS sensor and features Dual Expeed 6 processor. On the other hand, Sony A7 III has a
24.0MP Full frame (35.8 x 23.8 mm ) sized BSI-CMOS sensor and features Bionz X processor.
Below you can see the Z6 Mark II and A7 III sensor size comparison.
Nikon Z6 II and Sony A7 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 Z6 II and Sony A7 III sensors have been tested by DxO and the results show that A7 III has a better overall score of 96, 2 points higher compared to Z6 Mark II's score of 94.
Model |
Overall |
Color Depth |
Dynamic Range |
Low-light ISO |
Nikon Z6 II |
94 |
25.0 bits |
14.4 Evs |
3303 ISO |
Sony A7 III |
96 |
25.0 bits |
14.7 Evs |
3730 ISO |