Panasonic GM1 has a
16.0MP Four Thirds (17.3 x 13 mm ) sized CMOS sensor . On the other hand, Nikon P330 has a
12.0MP 1/1.7-inch (7.44 x 5.58 mm ) sized BSI-CMOS sensor .
Below you can see the GM1 and P330 sensor size comparison.
Sensor Size and Resolution Comparison image of Panasonic GM1 and Nikon P330 Cameras
As seen above, Panasonic GM1 has a 5.4x Larger sensor area than Nikon P330. 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 GM1 and Nikon P330 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, GM1 has scored 66, 12 points higher than P330.
Model
Overall
Color Depth
Dynamic Range
Low-light ISO
Panasonic GM1
66
22.3 bits
11.7 Evs
660 ISO
Nikon P330
54
21.0 bits
11.7 Evs
213 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 GM1
or the
Nikon P330 ,
including hyperfocal distance.
One thing to watch when comparing these two: they have different sensor sizes
(Four Thirds versus 1/1.7-inch),
so compare them at the same framing rather than the same focal length.
Put the same focal length on the smaller sensor and it will show less depth of
field, not more, because it also crops tighter. The calculator shows the
full frame equivalent focal length for each body so you can match the framing.
