Sony NEX-5 has a
14.0MP APS-C (23.4 x 15.6 mm ) sized CMOS sensor and features Bionz processor. On the other hand, Sony A55 has a
16.0MP APS-C (23.5 x 15.6 mm ) sized CMOS sensor and features Bionz processor.
Below you can see the NEX-5 and A55 sensor size comparison.
Sony NEX-5 and Sony A55 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 NEX-5 and Sony A55 sensors have been tested by DxO and the results show that A55 has a better overall score of 73, 4 points higher compared to NEX-5's score of 69.
Model |
Overall |
Color Depth |
Dynamic Range |
Low-light ISO |
Sony NEX-5 |
69 |
22.2 bits |
12.2 Evs |
796 ISO |
Sony A55 |
73 |
23.0 bits |
12.4 Evs |
816 ISO |