Both Panasonic GF2 and Canon G15 have 12.0 MP resolution sensors but Panasonic GF2's sensor is Four Thirds (17.3 x 13 mm ) and Canon G15's sensor is 1/1.7-inch (7.44 x 5.58 mm ).
Since Panasonic GF2'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 Canon G15.
Below you can see the GF2 and G15 sensor size comparison.
As seen above, Panasonic GF2 has a 5.4x Larger sensor area than Canon G15. 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 GF2 and Canon G15 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, GF2 has scored 54, 8 points higher than G15.
Model |
Overall |
Color Depth |
Dynamic Range |
Low-light ISO |
Panasonic GF2 |
54 |
21.2 bits |
10.3 Evs |
506 ISO |
Canon G15 |
46 |
19.9 bits |
11.5 Evs |
165 ISO |