Sony RX100 IV has a
20.0MP 1″ (13.2 x 8.8 mm ) sized Stacked BSI-CMOS sensor and features Bionz X processor. On the other hand, Olympus E-520 has a
10.0MP Four Thirds (17.3 x 13 mm ) sized CMOS sensor .
Sony RX100 IV's sensor provides 10MP more than Olympus E-520's sensor, which gives a significant advantage in real life. You can print your images larger or crop more freely.
On the other hand, please keep in mind that Max sensor resolution is not the only determinant of resolving power. Factors such as the optical elements, low pass filter, pixel size and sensor technology also affects the final resolution of the captured image.
Below you can see the RX100 IV and E-520 sensor size comparison.
As seen above, Olympus E-520 has a 1.9x Larger sensor area than Sony RX100 IV. 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 RX100 IV and Olympus E-520 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 IV has scored 70, 15 points higher than E-520.
Model |
Overall |
Color Depth |
Dynamic Range |
Low-light ISO |
Sony RX100 IV |
70 |
22.9 bits |
12.6 Evs |
562 ISO |
Olympus E-520 |
55 |
21.4 bits |
10.4 Evs |
548 ISO |