Both Canon M3 and Canon M6 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 M3 and M6 sensor size comparison.
Sensor Size and Resolution Comparison image of Canon M3 and Canon M6 Cameras
Canon M3 and Canon M6 have the same sensor sizes so they will provide same level of control over the depth of field when used with 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 M3 and Canon M6 sensors have been tested by DxO and the results show that M6 has a better overall score of 78, 6 points higher compared to M3's score of 72.
Model |
Overall |
Color Depth |
Dynamic Range |
Low-light ISO |
Canon M3 |
72 |
22.8 bits |
11.8 Evs |
1169 ISO |
Canon M6 |
78 |
23.4 bits |
12.6 Evs |
1317 ISO |