Both Sony A77 II and Canon T7 have APS-C sized 24.0 MP resolution sensors so sensor size and resolution is not a differentiator between these two cameras.
Below you can see the A77 II and T7 sensor size comparison.
As seen above, Sony A77 II has a 1.1x Larger sensor area than Canon T7. 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
Both Sony A77 II and Canon T7 sensors have been tested by DxoMark. DxoMark 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. Of the two cameras that we are comparing, A77 II has scored 82, 11 points higher than T7.
Model |
Overall |
Color Depth |
Dynamic Range |
Low-light ISO |
Sony A77 II |
82 |
24.4 bits |
13.4 Evs |
1013 ISO |
Canon T7 |
71 |
22.6 bits |
11.9 Evs |
1009 ISO |