Sony A37 has a
16.0MP APS-C (23.5 x 15.6 mm ) sized CMOS sensor . On the other hand, Nikon D3100 has a
14.0MP APS-C (23.1 x 15.4 mm ) sized CMOS sensor and features Expeed 2 processor.
Below you can see the A37 and D3100 sensor size comparison.
Sony A37 and Nikon D3100 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 A37 and Nikon D3100 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, A37 has scored 75, 8 points higher than D3100.
Model |
Overall |
Color Depth |
Dynamic Range |
Low-light ISO |
Sony A37 |
75 |
23.3 bits |
12.9 Evs |
799 ISO |
Nikon D3100 |
67 |
22.5 bits |
11.3 Evs |
919 ISO |