Both Nikon P7000 and Canon G11 have 1/1.7-inch sized 10.0 MP resolution sensors so sensor size and resolution is not a differentiator between these two cameras.
Below you can see the P7000 and G11 sensor size comparison.
Sensor Size and Resolution Comparison image of Nikon P7000 and Canon G11 Cameras
Nikon P7000 and Canon G11 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
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. Nikon P7000 and Canon G11 sensors have been tested by DxO and the results show that G11 has a better overall score of 47, 8 points higher compared to P7000's score of 39.
Model
Overall
Color Depth
Dynamic Range
Low-light ISO
Nikon P7000
39
19.1 bits
10.8 Evs
147 ISO
Canon G11
47
20.4 bits
11.1 Evs
169 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
Nikon P7000
or the
Canon G11 ,
including hyperfocal distance.
