Canon SL2 has a
24.0MP APS-C (22.3 x 14.9 mm ) sized CMOS sensor and features DIGIC 7 processor. On the other hand, Canon 1D MIII has a
10.0MP APS-H (28.7 x 18.7 mm ) sized CMOS sensor .
Canon SL2's sensor provides 14MP more than Canon 1D MIII's sensor, which gives a significant advantage in real life. You can print your images larger or crop more freely.
On the other hand, please keep in mind that Max sensor resolution is not the only determinant of resolving power. Factors such as the optical elements, low pass filter, pixel size and sensor technology also affects the final resolution of the captured image.
Below you can see the SL2 and 1D MIII sensor size comparison.
As seen above, Canon 1D MIII has a 1.6x Larger sensor area than Canon SL2. 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 Canon SL2 and Canon 1D MIII 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, SL2 has scored 79, 8 points higher than 1D MIII.
Model |
Overall |
Color Depth |
Dynamic Range |
Low-light ISO |
Canon SL2 |
79 |
23.6 bits |
13.4 Evs |
1041 ISO |
Canon 1D MIII |
71 |
22.7 bits |
11.7 Evs |
1078 ISO |