Both Leica M9-P and Leica M-E Typ 220 have Full frame sized 18.0 MP resolution sensors so sensor size and resolution is not a differentiator between these two cameras.
Another difference between these two cameras is that Leica M9-P's sensor lacks 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 M9-P and M-E Typ 220 sensor size comparison.
Sensor Size and Resolution Comparison image of Leica M9-P and Leica M-E Typ 220 Cameras
Leica M9-P and Leica M-E Typ 220 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. Leica M9-P and Leica M-E Typ 220 sensors have been tested by DxO and the results show that M-E Typ 220 has a better overall score of 69, 1 points higher compared to M9-P's score of 68.
Model
Overall
Color Depth
Dynamic Range
Low-light ISO
Leica M9-P
68
22.5 bits
11.6 Evs
854 ISO
Leica M-E Typ 220
69
22.7 bits
11.7 Evs
787 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 M9-P
or the
Leica M-E Typ 220 ,
including hyperfocal distance.
