Both Leica M Typ 240 and Leica M10 have Full frame sized 24.0 MP resolution sensors so sensor size and resolution is not a differentiator between these two cameras.
Below you can see the M Typ 240 and M10 sensor size comparison.
Sensor Size and Resolution Comparison image of Leica M Typ 240 and Leica M10 Cameras
Leica M Typ 240 and Leica M10 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 M Typ 240 and Leica M10 sensors have been tested by DxO and the results show that M10 has a better overall score of 86, 2 points higher compared to M Typ 240's score of 84.
Model
Overall
Color Depth
Dynamic Range
Low-light ISO
Leica M Typ 240
84
24.0 bits
13.3 Evs
1860 ISO
Leica M10
86
24.4 bits
13.3 Evs
2133 ISO
Sensor size sets the circle of confusion, so it drives how much depth of field each
of these bodies gives you at a given aperture. You can calculate it exactly for the
Leica M Typ 240
or the
Leica M10 ,
including hyperfocal distance.
