Both FujiFilm F70EXR and Canon G12 have 10.0 MP resolution sensors but FujiFilm F70EXR's sensor is 1/2-inch (6.4 x 4.8 mm ) and Canon G12's sensor is 1/1.7-inch (7.44 x 5.58 mm ).
Since Canon G12's has a larger sensor area with the same resolution, this means that it also has a larger pixel area hence better light collecting capacity for a given aperture compared to FujiFilm F70EXR.
Below you can see the F70EXR and G12 sensor size comparison.
Sensor Size and Resolution Comparison image of FujiFilm F70EXR and Canon G12 Cameras
As seen above, Canon G12 has a 1.4x Larger sensor area than FujiFilm F70EXR. 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.
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
FujiFilm F70EXR
or the
Canon G12 ,
including hyperfocal distance.
One thing to watch when comparing these two: they have different sensor sizes
(1/2-inch 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.
