Both Nikon D5300 and Canon 77D have 24.0 MP resolution sensors but Nikon D5300's sensor is APS-C (23.5 x 15.6 mm ) and Canon 77D's sensor is APS-C (22.3 x 14.9 mm ).
Since Nikon D5300'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 77D.
Another difference between these two cameras is that Nikon D5300's sensor lacks anti-alias (Low-Pass) filter. Removing anti-alias filter increases the sharpness and level of detail but at the same time, it increases the chance of moiré occurring in certain scenes.
Below you can see the D5300 and 77D sensor size comparison.
As seen above, Nikon D5300 has a 1.1x Larger sensor area than Canon 77D. 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 Nikon D5300 and Canon 77D 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, D5300 has scored 83, 5 points higher than 77D.
Model |
Overall |
Color Depth |
Dynamic Range |
Low-light ISO |
Nikon D5300 |
83 |
24.0 bits |
13.9 Evs |
1338 ISO |
Canon 77D |
78 |
23.6 bits |
13.3 Evs |
971 ISO |