Sony A230 has a
10.0MP APS-C (23.5 x 15.7 mm ) sized CCD sensor and features Bionz processor. On the other hand, Sony A390 has a
14.0MP APS-C (23.5 x 15.7 mm ) sized CCD sensor and features Bionz processor.
Below you can see the A230 and A390 sensor size comparison.
Sony A230 and Sony A390 have the same sensor sizes so they will provide same level of control over the depth of field when used with same focal length and aperture. On the other hand, since Sony A230 has 39% larger pixel area compared to Sony A390, it has potential to collect more light on pixel level hence have less noise in low light / High ISO images.
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 A230 and Sony A390 sensors have been tested by DxO and the results show that A390 has a better overall score of 66, 3 points higher compared to A230's score of 63.
Model |
Overall |
Color Depth |
Dynamic Range |
Low-light ISO |
Sony A230 |
63 |
22.3 bits |
11.4 Evs |
531 ISO |
Sony A390 |
66 |
22.5 bits |
11.5 Evs |
607 ISO |