Both Sony RX10 II and Canon 70D have 20.0 MP resolution sensors but Sony RX10 II's sensor is 1″ (13.2 x 8.8 mm ) and Canon 70D's sensor is APS-C (22.5 x 15 mm ).
Since Canon 70D'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 RX10 II.
Below you can see the RX10 II and 70D sensor size comparison.
As seen above, Canon 70D has a 2.9x Larger sensor area than Sony RX10 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 RX10 II and Canon 70D 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, RX10 II has scored 70, 2 points higher than 70D.
Model |
Overall |
Color Depth |
Dynamic Range |
Low-light ISO |
Sony RX10 II |
70 |
23.0 bits |
12.6 Evs |
531 ISO |
Canon 70D |
68 |
22.5 bits |
11.6 Evs |
926 ISO |