Both Olympus E-PM1 and Panasonic GF3 have Four Thirds sized 12.0 MP resolution sensors so sensor size and resolution is not a differentiator between these two cameras.
Below you can see the E-PM1 and GF3 sensor size comparison.
Olympus E-PM1 and Panasonic GF3 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 Olympus E-PM1 and Panasonic GF3 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, E-PM1 has scored 52, 2 points higher than GF3.
Model |
Overall |
Color Depth |
Dynamic Range |
Low-light ISO |
Olympus E-PM1 |
52 |
21.0 bits |
10.3 Evs |
499 ISO |
Panasonic GF3 |
50 |
20.6 bits |
10.1 Evs |
459 ISO |