Both Nikon S220 and Kodak Mini have 10.0 MP resolution sensors but Nikon S220's sensor is 1/2.3-inch (6.08 x 4.56 mm ) and Kodak Mini's sensor is 1/3-inch (4.8 x 3.6 mm ).
Since Nikon S220'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 Kodak Mini.
Below you can see the S220 and Mini sensor size comparison.
Sensor Size and Resolution Comparison image of Nikon S220 and Kodak Mini Cameras
As seen above, Nikon S220 has a 1.6x Larger sensor area than Kodak Mini. 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
Nikon S220
or the
Kodak Mini ,
including hyperfocal distance.
One thing to watch when comparing these two: they have different sensor sizes
(1/2.3-inch versus 1/3-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.