Canon G12 has a
10.0MP 1/1.7-inch (7.44 x 5.58 mm ) sized CCD sensor and features Digic 4 processor. On the other hand, Canon G15 has a
12.0MP 1/1.7-inch (7.44 x 5.58 mm ) sized CMOS sensor and features Digic 5 processor.
Below you can see the G12 and G15 sensor size comparison.
Sensor Size and Resolution Comparison image of Canon G12 and Canon G15 Cameras
Canon G12 and Canon G15 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 Canon G12 has 20% larger pixel area compared to Canon G15, it has potential to collect more light on pixel level hence have less noise in low light / High ISO images.
DxOMark Sensor Scores
Both Canon G12 and Canon G15 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, G12 has scored 47, 1 points higher than G15.
Model
Overall
Color Depth
Dynamic Range
Low-light ISO
Canon G12
47
20.4 bits
11.2 Evs
161 ISO
Canon G15
46
19.9 bits
11.5 Evs
165 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 G12
or the
Canon G15 ,
including hyperfocal distance.
