Both Sony A3000 and Canon G9 X II have 20.0 MP resolution sensors but Sony A3000's sensor is APS-C (23.5 x 15.6 mm ) and Canon G9 X II's sensor is 1″ (13.2 x 8.8 mm ).
Since Sony A3000's has a larger sensor area with the same resolution, this means that it also has a larger pixel area hence better light collecting capacity for a given aperture compared to Canon G9 X II.
Below you can see the A3000 and G9 X II sensor size comparison.
As seen above, Sony A3000 has a 3.2x Larger sensor area than Canon G9 X 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 A3000 and Canon G9 X II 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, A3000 has scored 78, 13 points higher than G9 X II.
Model |
Overall |
Color Depth |
Dynamic Range |
Low-light ISO |
Sony A3000 |
78 |
23.7 bits |
12.8 Evs |
1068 ISO |
Canon G9 X II |
65 |
21.9 bits |
12.5 Evs |
522 ISO |