Both Sony RX10 and Panasonic FZ2500 have 20.0 MP resolution sensors but Sony RX10's sensor is 1-inch (13.2 x 8.8 mm ) and Panasonic FZ2500's sensor is 1″ (13.2 x 8.8 m ).
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 FZ2500.
Below you can see the RX10 and FZ2500 sensor size comparison.
Sensor Size and Resolution Comparison image of Sony RX10 and Panasonic FZ2500 Cameras
Sony RX10 and Panasonic FZ2500 have almost the same sensor size, so neither of them has any significant advantage over the other in terms of providing control over depth of field when used with the 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 RX10 and Panasonic FZ2500 sensors have been tested by DxO and the results show that FZ2500 has a better overall score of 70, 1 points higher compared to RX10's score of 69.
Model
Overall
Color Depth
Dynamic Range
Low-light ISO
Sony RX10
69
22.9 bits
12.6 Evs
474 ISO
Panasonic FZ2500
70
23.0 bits
12.6 Evs
538 ISO
Sensor size sets the circle of confusion, so it drives how much depth of field each
of these bodies gives you at a given aperture. You can calculate it exactly for the
Sony RX10
or the
Panasonic FZ2500 ,
including hyperfocal distance.
One thing to watch when comparing these two: they have different sensor sizes
(1-inch versus 1″ ),
so compare them at the same framing rather than the same focal length.
Put the same focal length on the smaller sensor and it will show less depth of
field, not more, because it also crops tighter. The calculator shows the
full frame equivalent focal length for each body so you can match the framing.
