Sony RX100 has a
20.0MP 1-inch (13.2 x 8.8 mm ) sized CMOS sensor . On the other hand, Olympus E-M10 has a
16.0MP Four Thirds (17.3 x 13 mm ) sized CMOS sensor and features TruePic VII processor.
Below you can see the RX100 and E-M10 sensor size comparison.
As seen above, Olympus E-M10 has a 1.9x Larger sensor area than Sony RX100. 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
DxOMark is a benchmark that scientifically assesses image quality of camera sensors. It 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. Sony RX100 and Olympus E-M10 sensors have been tested by DxO and the results show that E-M10 has a better overall score of 72, 6 points higher compared to RX100's score of 66.
Model |
Overall |
Color Depth |
Dynamic Range |
Low-light ISO |
Sony RX100 |
66 |
22.6 bits |
12.4 Evs |
390 ISO |
Olympus E-M10 |
72 |
22.8 bits |
12.3 Evs |
884 ISO |