Leica M11 Monochrome has a
60.0MP Full frame (36 x 24 mm ) sized BSI-CMOS sensor and features Maestro III processor. On the other hand, Sony A99 II has a
42.0MP Full frame (35.9 x 24 mm ) sized BSI-CMOS sensor and features Bionz X processor.
Leica M11 Monochrome's sensor provides 18MP more than Sony A99 II's sensor, which gives a significant advantage in real life. You can print your images larger or crop more freely.
On the other hand, please keep in mind that Max sensor resolution is not the only determinant of resolving power. Factors such as the optical elements, low pass filter, pixel size and sensor technology also affects the final resolution of the captured image.
One other difference between these two cameras that is worth mentioning is that Sony A99 II'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 M11 Monochrome and A99 II sensor size comparison.
Leica M11 Monochrome and Sony A99 II 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
Both Leica M11 Monochrome and Sony A99 II 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, M11 Monochrome has scored 100, 8 points higher than A99 II.
Model |
Overall |
Color Depth |
Dynamic Range |
Low-light ISO |
Leica M11 Monochrome |
100 |
26.3 bits |
14.8 Evs |
3376 ISO |
Sony A99 II |
92 |
25.4 bits |
13.4 Evs |
2317 ISO |