Pentax K-5 has a
16.0MP APS-C (23.7 x 15.7 mm ) sized CMOS sensor and features Prime II processor. On the other hand, Sony A3000 has a
20.0MP APS-C (23.5 x 15.6 mm ) sized CMOS sensor and features BIONZ processor.
Below you can see the K-5 and A3000 sensor size comparison.
Pentax K-5 and Sony A3000 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 Pentax K-5 and Sony A3000 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, K-5 has scored 82, 4 points higher than A3000.
Model |
Overall |
Color Depth |
Dynamic Range |
Low-light ISO |
Pentax K-5 |
82 |
23.7 bits |
14.1 Evs |
1162 ISO |
Sony A3000 |
78 |
23.7 bits |
12.8 Evs |
1068 ISO |