Both Kodak Touch and Samsung ST90 have 14.0 MP resolution sensors but Kodak Touch's sensor is 1/3-inch (4.8 x 3.6 mm ) and Samsung ST90's sensor is 1/2.3-inch (6.16 x 4.62 mm ).
Since Samsung ST90'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 Touch.
Below you can see the Touch and ST90 sensor size comparison.
Sensor Size and Resolution Comparison image of Kodak Touch and Samsung ST90 Cameras
As seen above, Samsung ST90 has a 1.6x Larger sensor area than Kodak Touch. 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
Kodak Touch
or the
Samsung ST90 ,
including hyperfocal distance.
One thing to watch when comparing these two: they have different sensor sizes
(1/3-inch versus 1/2.3-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.
