Sony A550 has a
14.0MP APS-C (23.4 x 15.6 mm ) sized CMOS sensor and features Bionz processor. On the other hand, Canon T7 has a
24.0MP APS-C (22.3 x 14.9 mm ) sized CMOS sensor and features Digic 4+ processor.
Canon T7's sensor provides 10MP more than Sony A550's sensor, which gives a significant advantage in real life. You can print your images larger or crop more freely.
On the other hand, please keep in mind that Max sensor resolution is not the only determinant of resolving power. Factors such as the optical elements, low pass filter, pixel size and sensor technology also affects the final resolution of the captured image.
Below you can see the A550 and T7 sensor size comparison.
Sony A550 and Canon T7 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 A550 and Canon T7 sensors have been tested by DxO and the results show that T7 has a better overall score of 71, 5 points higher compared to A550's score of 66.
Model |
Overall |
Color Depth |
Dynamic Range |
Low-light ISO |
Sony A550 |
66 |
21.9 bits |
11.8 Evs |
807 ISO |
Canon T7 |
71 |
22.6 bits |
11.9 Evs |
1009 ISO |