Pentax Q10 has a
12.0MP 1/2.3-inch (6.17 x 4.55 mm ) sized CMOS sensor . On the other hand, Panasonic GX8 has a
20.0MP Four Thirds (17.3 x 13 mm ) sized CMOS sensor and features Venus Engine processor.
Panasonic GX8's sensor provides 8MP more than Pentax Q10'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 Q10 and GX8 sensor size comparison.
As seen above, Panasonic GX8 has a 8.0x Larger sensor area than Pentax Q10. 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. Pentax Q10 and Panasonic GX8 sensors have been tested by DxO and the results show that GX8 has a better overall score of 75, 26 points higher compared to Q10's score of 49.
Model |
Overall |
Color Depth |
Dynamic Range |
Low-light ISO |
Pentax Q10 |
49 |
21.1 bits |
10.9 Evs |
183 ISO |
Panasonic GX8 |
75 |
23.5 bits |
12.6 Evs |
806 ISO |