Panasonic G2 has a
12.0MP Four Thirds (17.3 x 13 mm ) sized CMOS sensor and features Venus Engine HD II processor. On the other hand, Panasonic G3 has a
16.0MP Four Thirds (17.3 x 13 mm ) sized CMOS sensor and features Venus Engine FHD processor.
Below you can see the G2 and G3 sensor size comparison.
Sensor Size and Resolution Comparison image of Panasonic G2 and Panasonic G3 Cameras
Panasonic G2 and Panasonic G3 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. On the other hand, since Panasonic G2 has 31% larger pixel area compared to Panasonic G3, it has potential to collect more light on pixel level hence have less noise in low light / High ISO images.
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. Panasonic G2 and Panasonic G3 sensors have been tested by DxO and the results show that G3 has a better overall score of 56, 3 points higher compared to G2's score of 53.
Model
Overall
Color Depth
Dynamic Range
Low-light ISO
Panasonic G2
53
21.2 bits
10.3 Evs
493 ISO
Panasonic G3
56
21.0 bits
10.6 Evs
667 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 G2
or the
Panasonic G3 ,
including hyperfocal distance.
