Sony A77 II has a
24.0MP APS-C (23.5 x 15.6 mm ) sized CMOS sensor and features Bionz X processor. On the other hand, Canon 1D X II has a
20.0MP Full frame (36 x 24 mm ) sized CMOS sensor and features Dual DIGIC 6+ processor.
Below you can see the A77 II and 1D X MII sensor size comparison.
As seen above, Canon 1D X II has a 2.4x Larger sensor area than Sony A77 II. Larger sensors give photographer more control on the depth of field and blurry background compared to smaller sensor when shot in 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 A77 II and Canon 1D X II sensors have been tested by DxO and the results show that 1D X MII has a better overall score of 88, 6 points higher compared to A77 II's score of 82.
Model |
Overall |
Color Depth |
Dynamic Range |
Low-light ISO |
Sony A77 II |
82 |
24.4 bits |
13.4 Evs |
1013 ISO |
Canon 1D X II |
88 |
24.1 bits |
13.5 Evs |
3207 ISO |