Both Leica M10 and Leica SL have Full frame sized 24.0 MP resolution sensors so sensor size and resolution is not a differentiator between these two cameras.
One other difference between these two cameras that is worth mentioning is that Leica SL's sensor doesn't have an 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 M10 and SL sensor size comparison.
Leica M10 and Leica SL 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
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. Leica M10 and Leica SL sensors have been tested by DxO and the results show that SL has a better overall score of 88, 2 points higher compared to M10's score of 86.
Model |
Overall |
Color Depth |
Dynamic Range |
Low-light ISO |
Leica M10 |
86 |
24.4 bits |
13.3 Evs |
2133 ISO |
Leica SL |
88 |
25.0 bits |
13.4 Evs |
1821 ISO |