Sony A7R III has a 42.0MP Full frame (35.9 x 24 mm ) sized BSI-CMOS sensor and features Bionz X processor. On the other hand, Leica S2 has a 38.0MP Medium format (45 x 30 mm ) sized CCD sensor .
Another difference between these two cameras is that Sony A7R III'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 moire occurring in certain scenes.
Below you can see the A7R III and S2 sensor size comparison.
![Sony A7R III vs Leica S2 Sensor Size Comparison]()
Sensor Size and Resolution Comparison image of Sony A7R III and Leica S2 Cameras
As seen above, Leica S2 has a 1.6x Larger sensor area than Sony A7R III. 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 Sony A7R III and Leica S2 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, A7R III has scored 100, 24 points higher than S2.
| Model |
Overall |
Color Depth |
Dynamic Range |
Low-light ISO |
|
Sony A7R III |
100 |
26.0 bits |
14.7 Evs |
3523 ISO |
|
Leica S2 |
76 |
23.9 bits |
12.2 Evs |
824 ISO |