Sony A37 has a
16.0MP APS-C (23.5 x 15.6 mm ) sized CMOS sensor . On the other hand, Pentax K-x has a
12.0MP APS-C (23.6 x 15.8 mm ) sized CMOS sensor and features Prime processor.
Below you can see the A37 and K-x sensor size comparison.
Sony A37 and Pentax K-x 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 Pentax K-x 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, 3 points higher than K-x.
Model |
Overall |
Color Depth |
Dynamic Range |
Low-light ISO |
Sony A37 |
75 |
23.3 bits |
12.9 Evs |
799 ISO |
Pentax K-x |
72 |
22.8 bits |
12.5 Evs |
811 ISO |