Both Canon T7 and Canon 80D 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 T7 and 80D sensor size comparison.
Canon T7 and Canon 80D 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 T7 and Canon 80D sensors have been tested by DxO and the results show that 80D has a better overall score of 79, 8 points higher compared to T7's score of 71.
Model |
Overall |
Color Depth |
Dynamic Range |
Low-light ISO |
Canon T7 |
71 |
22.6 bits |
11.9 Evs |
1009 ISO |
Canon 80D |
79 |
23.6 bits |
13.2 Evs |
1135 ISO |