Fujifilm X-S1 has a
12.0MP 2/3-inch (8.8 x 6.6 mm ) sized EXRCMOS sensor and features EXR processor. On the other hand, Sony RX10 II has a
20.0MP 1″ (13.2 x 8.8 mm ) sized Stacked BSI-CMOS sensor and features Bionz X processor.
Sony RX10 II's sensor provides 8MP more than Fujifilm X-S1'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 X-S1 and RX10 II sensor size comparison.
As seen above, Sony RX10 II has a 2.0x Larger sensor area than Fujifilm X-S1. 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. Fujifilm X-S1 and Sony RX10 II sensors have been tested by DxO and the results show that RX10 II has a better overall score of 70, 21 points higher compared to X-S1's score of 49.
Model |
Overall |
Color Depth |
Dynamic Range |
Low-light ISO |
Fujifilm X-S1 |
49 |
20.4 bits |
11.2 Evs |
216 ISO |
Sony RX10 II |
70 |
23.0 bits |
12.6 Evs |
531 ISO |