Sony A7 has a
24.0MP Full frame (35.8 x 23.9 mm ) sized CMOS sensor and features Bionz X processor. On the other hand, Leica M-E Typ 220 has a
18.0MP Full frame (36 x 24 mm ) sized CCD sensor .
Sony A7's sensor provides 6MP more than Leica M-E Typ 220'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.
Below you can see the A7 and M-E Typ 220 sensor size comparison.
Sony A7 and Leica M-E Typ 220 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 Sony A7 and Leica M-E Typ 220 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, A7 has scored 90, 21 points higher than M-E Typ 220.
Model |
Overall |
Color Depth |
Dynamic Range |
Low-light ISO |
Sony A7 |
90 |
24.8 bits |
14.2 Evs |
2248 ISO |
Leica M-E Typ 220 |
69 |
22.7 bits |
11.7 Evs |
787 ISO |