Canon G3 X has a
20.0MP 1″ (13.2 x 8.8 mm ) sized BSI-CMOS sensor and features DIGIC 6 processor. On the other hand, Nikon D2H has a
4.0MP APS-C (23.7 x 15.5 mm ) sized JFET sensor .
Canon G3 X's sensor provides 16MP more than Nikon D2H's sensor, which gives a significant advantage in real life. You can print your images larger or crop more freely.
On the other hand, please keep in mind that Max sensor resolution is not the only determinant of resolving power. Factors such as the optical elements, low pass filter, pixel size and sensor technology also affects the final resolution of the captured image.
Below you can see the G3 X and D2H sensor size comparison.
Sensor Size and Resolution Comparison image of Canon G3 X and Nikon D2H Cameras
As seen above, Nikon D2H has a 3.2x Larger sensor area than Canon G3 X. 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 Canon G3 X and Nikon D2H 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 X has scored 63, 23 points higher than D2H.
Model
Overall
Color Depth
Dynamic Range
Low-light ISO
Canon G3 X
63
21.4 bits
12.3 Evs
521 ISO
Nikon D2H
40
18.9 bits
10.0 Evs
352 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
Canon G3 X
or the
Nikon D2H ,
including hyperfocal distance.
One thing to watch when comparing these two: they have different sensor sizes
(1″ versus APS-C),
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.
