Sony RX100 II has a
20.0MP 1-inch (13.2 x 8.8 mm ) sized BSI-CMOS sensor . 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.
Sony RX100 II's sensor provides 10MP more than Sony A330's sensor, which gives a significant advantage in real life. You can print your images larger or crop more freely.
On the other hand, please keep in mind that Max sensor resolution is not the only determinant of resolving power. Factors such as the optical elements, low pass filter, pixel size and sensor technology also affects the final resolution of the captured image.
Below you can see the RX100 II and A330 sensor size comparison.
As seen above, Sony A330 has a 3.2x Larger sensor area than Sony RX100 II. Larger sensors give photographer more control on the depth of field and blurry background compared to smaller sensor when shot in same focal length and aperture.
DxOMark Sensor Scores
Both Sony RX100 II 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, RX100 II has scored 67, 3 points higher than A330.
Model |
Overall |
Color Depth |
Dynamic Range |
Low-light ISO |
Sony RX100 II |
67 |
22.5 bits |
12.4 Evs |
483 ISO |
Sony A330 |
64 |
22.4 bits |
11.5 Evs |
535 ISO |