Sony A390 has a
14.0MP APS-C (23.5 x 15.7 mm ) sized CCD sensor and features Bionz processor. On the other hand, Sony A330 has a
10.0MP APS-C (23.5 x 15.7 mm ) sized CCD sensor and features Bionz processor.
Below you can see the A390 and A330 sensor size comparison.
Sony A390 and Sony A330 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 A330 has 39% larger pixel area (36.75µm2 vs 26.30µm2) compared to Sony A390, it has larger pixel area to collect light hence potential to have less noise in low light / High ISO images.
DxOMark Sensor Scores
Both Sony A390 and Sony A330 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, A390 has scored 66, 2 points higher than A330.
Model |
Overall |
Color Depth |
Dynamic Range |
Low-light ISO |
Sony A390 |
66 |
22.5 bits |
11.5 Evs |
607 ISO |
Sony A330 |
64 |
22.4 bits |
11.5 Evs |
535 ISO |