Both Panasonic GX8 and Sony RX100 V have 20.0 MP resolution sensors but Panasonic GX8's sensor is Four Thirds (17.3 x 13 mm ) and Sony RX100 V's sensor is 1″ (13.2 x 8.8 mm ).
Since Panasonic GX8's has a larger sensor area with the same resolution, this means that it also has a larger pixel area hence better light collecting capacity for a given aperture compared to Sony RX100 V.
Below you can see the GX8 and RX100 V sensor size comparison.
As seen above, Panasonic GX8 has a 1.9x Larger sensor area than Sony RX100 V. 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 Panasonic GX8 and Sony RX100 V 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, GX8 has scored 75, 5 points higher than RX100 V.
Model |
Overall |
Color Depth |
Dynamic Range |
Low-light ISO |
Panasonic GX8 |
75 |
23.5 bits |
12.6 Evs |
806 ISO |
Sony RX100 V |
70 |
22.8 bits |
12.4 Evs |
586 ISO |