Sony A6300 has a
24.0MP APS-C (23.5 x 15.6 mm ) sized CMOS sensor and features BIONZ X processor. On the other hand, Sony A7S has a
12.0MP Full frame (35.8 x 23.9 mm ) sized CMOS sensor and features Bionz X processor.
Sony A6300's sensor provides 12MP more than Sony A7S'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 A6300 and A7S sensor size comparison.
As seen above, Sony A7S has a 2.3x Larger sensor area than Sony A6300. 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 A6300 and Sony A7S sensors have been tested by DxO and the results show that A7S has a better overall score of 87, 2 points higher compared to A6300's score of 85.
Model |
Overall |
Color Depth |
Dynamic Range |
Low-light ISO |
Sony A6300 |
85 |
24.4 bits |
13.7 Evs |
1437 ISO |
Sony A7S |
87 |
23.9 bits |
13.2 Evs |
3702 ISO |