Sony A7 III has a
24.0MP Full frame (35.8 x 23.8 mm ) sized BSI-CMOS sensor and features Bionz X processor. On the other hand, Sony RX100 II has a
20.0MP 1-inch (13.2 x 8.8 mm ) sized BSI-CMOS sensor .
Below you can see the A7 III and RX100 II sensor size comparison.
As seen above, Sony A7 III has a 7.3x 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 A7 III and Sony RX100 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, A7 III has scored 96, 29 points higher than RX100 II.
Model |
Overall |
Color Depth |
Dynamic Range |
Low-light ISO |
Sony A7 III |
96 |
25.0 bits |
14.7 Evs |
3730 ISO |
Sony RX100 II |
67 |
22.5 bits |
12.4 Evs |
483 ISO |