Both Panasonic ZS100 and Sony RX10 have 20.0 MP resolution sensors but Panasonic ZS100's sensor is 1″ (13.2 x 8.8 mm ) and Sony RX10's sensor is 1-inch (13.2 x 8.8 mm ).
Since Sony RX10'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 Panasonic ZS100.
Below you can see the ZS100 and RX10 sensor size comparison.
Panasonic ZS100 and Sony RX10 have the same sensor sizes so they will provide same level of control over the depth of field when used with same focal length and aperture.
DxOMark Sensor Scores
Both Panasonic ZS100 and Sony RX10 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, ZS100 has scored 70, 1 points higher than RX10.
Model |
Overall |
Color Depth |
Dynamic Range |
Low-light ISO |
Panasonic ZS100 |
70 |
22.8 bits |
12.5 Evs |
559 ISO |
Sony RX10 |
69 |
22.9 bits |
12.6 Evs |
474 ISO |