Both Leica M10-D and Nikon D3200 have 24.0 MP resolution sensors but Leica M10-D's sensor is Full frame (35.8 x 23.9 mm ) and Nikon D3200's sensor is APS-C (23.2 x 15.4 mm ).
Since Leica M10-D'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 Nikon D3200.
Below you can see the M10-D and D3200 sensor size comparison.
Sensor Size and Resolution Comparison image of Leica M10-D and Nikon D3200 Cameras
As seen above, Leica M10-D has a 2.4x Larger sensor area than Nikon D3200. 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 Leica M10-D and Nikon D3200 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, M10-D has scored 86, 5 points higher than D3200.
Model
Overall
Color Depth
Dynamic Range
Low-light ISO
Leica M10-D
86
24.4 bits
13.3 Evs
2133 ISO
Nikon D3200
81
24.1 bits
13.2 Evs
1131 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 M10-D
or the
Nikon D3200 ,
including hyperfocal distance.
One thing to watch when comparing these two: they have different sensor sizes
(Full frame versus APS-C),
so compare them at the same framing rather than the same focal length.
Put the same focal length on the smaller sensor and it will show less depth of
field, not more, because it also crops tighter. The calculator shows the
full frame equivalent focal length for each body so you can match the framing.