Olympus E-M10 II has a
16.0MP Four Thirds (17.3 x 13 mm ) sized CMOS sensor and features TruePic VII processor. On the other hand, Samsung NX20 has a
20.0MP APS-C (23.5 x 15.7 mm ) sized CMOS sensor .
Below you can see the E-M10 II and NX20 sensor size comparison.
As seen above, Samsung NX20 has a 1.6x Larger sensor area than Olympus E-M10 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
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. Olympus E-M10 II and Samsung NX20 sensors have been tested by DxO and the results show that NX20 has a better overall score of 75, 2 points higher compared to E-M10 II's score of 73.
Model |
Overall |
Color Depth |
Dynamic Range |
Low-light ISO |
Olympus E-M10 II |
73 |
23.1 bits |
12.5 Evs |
842 ISO |
Samsung NX20 |
75 |
23.4 bits |
12.9 Evs |
785 ISO |