Both Canon S100 and Canon G15 have 1/1.7-inch sized 12.0 MP resolution sensors so sensor size and resolution is not a differentiator between these two cameras.
Below you can see the S100 and G15 sensor size comparison.
Canon S100 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.
DxOMark Sensor Scores
Both Canon S100 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, S100 has scored 50, 4 points higher than G15.
Model |
Overall |
Color Depth |
Dynamic Range |
Low-light ISO |
Canon S100 |
50 |
20.7 bits |
11.6 Evs |
153 ISO |
Canon G15 |
46 |
19.9 bits |
11.5 Evs |
165 ISO |