Sony A7 has a
24.0MP Full frame (35.8 x 23.9 mm ) sized CMOS sensor and features Bionz X processor. On the other hand, 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.
Below you can see the A7 and Z6 Mark II sensor size comparison.
Sony A7 and Nikon Z6 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. Sony A7 and Nikon Z6 II sensors have been tested by DxO and the results show that Z6 Mark II has a better overall score of 94, 4 points higher compared to A7's score of 90.
Model |
Overall |
Color Depth |
Dynamic Range |
Low-light ISO |
Sony A7 |
90 |
24.8 bits |
14.2 Evs |
2248 ISO |
Nikon Z6 II |
94 |
25.0 bits |
14.4 Evs |
3303 ISO |