Sony A57 has a
16.0MP APS-C (23.5 x 15.6 mm ) sized CMOS sensor . On the other hand, Panasonic FZ2500 has a
20.0MP 1″ (13.2 x 8.8 m ) sized BSI-CMOS sensor and features Venus Engine processor.
Below you can see the A57 and FZ2500 sensor size comparison.
As seen above, Sony A57 has a 3.5x Larger sensor area than Panasonic FZ2500. 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 Sony A57 and Panasonic FZ2500 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, A57 has scored 75, 5 points higher than FZ2500.
Model |
Overall |
Color Depth |
Dynamic Range |
Low-light ISO |
Sony A57 |
75 |
23.4 bits |
13.0 Evs |
785 ISO |
Panasonic FZ2500 |
70 |
23.0 bits |
12.6 Evs |
538 ISO |