Sony a5000 has a
20.0MP APS-C (23.2 x 15.4 mm ) sized CMOS sensor and features Bionz X processor. On the other hand, Pentax K-5 has a
16.0MP APS-C (23.7 x 15.7 mm ) sized CMOS sensor and features Prime II processor.
Below you can see the a5000 and K-5 sensor size comparison.
Sony a5000 and Pentax K-5 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
DxOMark is a benchmark that scientifically assesses image quality of camera sensors. It 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. Sony a5000 and Pentax K-5 sensors have been tested by DxO and the results show that K-5 has a better overall score of 82, 3 points higher compared to a5000's score of 79.
Model |
Overall |
Color Depth |
Dynamic Range |
Low-light ISO |
Sony a5000 |
79 |
23.8 bits |
13.0 Evs |
1089 ISO |
Pentax K-5 |
82 |
23.7 bits |
14.1 Evs |
1162 ISO |