Canon 5D MIII has a
22.0MP Full frame (36 x 24 mm ) sized CMOS sensor and features Digic 5+ processor. On the other hand, Sony A99 has a
24.0MP Full frame (35.8 x 23.8 mm ) sized CMOS sensor and features Bionz processor.
Below you can see the 5D MIII and A99 sensor size comparison.
Canon 5D MIII and Sony A99 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. Canon 5D MIII and Sony A99 sensors have been tested by DxO and the results show that A99 has a better overall score of 89, 8 points higher compared to 5D MIII's score of 81.
Model |
Overall |
Color Depth |
Dynamic Range |
Low-light ISO |
Canon 5D MIII |
81 |
24.0 bits |
11.7 Evs |
2293 ISO |
Sony A99 |
89 |
25.0 bits |
14.0 Evs |
1555 ISO |