Both Panasonic G3 and Panasonic GX1 have Four Thirds sized 16.0 MP resolution sensors so sensor size and resolution is not a differentiator between these two cameras.
Below you can see the G3 and GX1 sensor size comparison.
Sensor Size and Resolution Comparison image of Panasonic G3 and Panasonic GX1 Cameras
Panasonic G3 and Panasonic GX1 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 G3 and Panasonic GX1 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, G3 has scored 56, 1 points higher than GX1.
Model
Overall
Color Depth
Dynamic Range
Low-light ISO
Panasonic G3
56
21.0 bits
10.6 Evs
667 ISO
Panasonic GX1
55
20.8 bits
10.6 Evs
703 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
Panasonic G3
or the
Panasonic GX1 ,
including hyperfocal distance.
