Both Canon 80D and Canon T6i have 24.0 MP resolution sensors but Canon 80D's sensor is APS-C (22.5 x 15 mm ) and Canon T6i's sensor is APS-C (22.3 x 14.9 mm ).
Since Canon 80D's has a larger sensor area with the same resolution, this means that it also has a larger pixel area hence better light collecting capacity for a given aperture compared to Canon T6i.
Below you can see the 80D and T6i sensor size comparison.
Sensor Size and Resolution Comparison image of Canon 80D and Canon T6i Cameras
Canon 80D and Canon T6i 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
Both Canon 80D and Canon T6i 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, 80D has scored 79, 8 points higher than T6i.
Model |
Overall |
Color Depth |
Dynamic Range |
Low-light ISO |
Canon 80D |
79 |
23.6 bits |
13.2 Evs |
1135 ISO |
Canon T6i |
71 |
22.7 bits |
12.0 Evs |
919 ISO |