Both Canon T6i and Nikon D5200 have 24.0 MP resolution sensors but Canon T6i's sensor is APS-C (22.3 x 14.9 mm ) and Nikon D5200's sensor is APS-C (23.5 x 15.6 mm ).
Since Nikon D5200'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 T6i and D5200 sensor size comparison.
As seen above, Nikon D5200 has a 1.1x Larger sensor area than Canon T6i. 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
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 T6i and Nikon D5200 sensors have been tested by DxO and the results show that D5200 has a better overall score of 84, 13 points higher compared to T6i's score of 71.
Model |
Overall |
Color Depth |
Dynamic Range |
Low-light ISO |
Canon T6i |
71 |
22.7 bits |
12.0 Evs |
919 ISO |
Nikon D5200 |
84 |
24.2 bits |
13.9 Evs |
1284 ISO |