Nikon D3X has a
25.0MP Full frame (35.9 x 24 mm ) sized CMOS sensor and features Expeed 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 D3X and A9 Mark II sensor size comparison.
Nikon D3X 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. Nikon D3X 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, 5 points higher compared to D3X's score of 88.
Model |
Overall |
Color Depth |
Dynamic Range |
Low-light ISO |
Nikon D3X |
88 |
24.7 bits |
13.7 Evs |
1992 ISO |
Sony A9 II |
93 |
25.0 bits |
14.0 Evs |
3434 ISO |