Canon 550D has a
18.0MP APS-C (22.3 x 14.9 mm ) sized CMOS sensor and features Digic 4 processor. On the other hand, Canon 7D MII has a
20.0MP APS-C (22.4 x 15 mm ) sized CMOS sensor and features DIGIC 6 (dual) processor.
Below you can see the 550D and 7D MII sensor size comparison.
Canon 550D and Canon 7D MII 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 550D and Canon 7D MII sensors have been tested by DxO and the results show that 7D MII has a better overall score of 70, 4 points higher compared to 550D's score of 66.
Model |
Overall |
Color Depth |
Dynamic Range |
Low-light ISO |
Canon 550D |
66 |
22.0 bits |
11.6 Evs |
807 ISO |
Canon 7D MII |
70 |
22.4 bits |
11.8 Evs |
1082 ISO |