Both Sony RX100 and Canon G9 X II have 20.0 MP resolution sensors but Sony RX100's sensor is 1-inch (13.2 x 8.8 mm ) and Canon G9 X II's sensor is 1″ (13.2 x 8.8 mm ).
Since Canon G9 X II'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 Sony RX100.
Below you can see the RX100 and G9 X II sensor size comparison.
Sony RX100 and Canon G9 X II 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.
DxOMark Sensor Scores
Both Sony RX100 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, RX100 has scored 66, 1 points higher than G9 X II.
Model |
Overall |
Color Depth |
Dynamic Range |
Low-light ISO |
Sony RX100 |
66 |
22.6 bits |
12.4 Evs |
390 ISO |
Canon G9 X II |
65 |
21.9 bits |
12.5 Evs |
522 ISO |