Canon S90 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 N100 has a
12.0MP 1/1.7-inch (7.44 x 5.58 mm ) sized CMOS sensor and features DIGIC 6 processor.
Below you can see the S90 and N100 sensor size comparison.
Sensor Size and Resolution Comparison image of Canon S90 and Canon N100 Cameras
Canon S90 and Canon N100 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 S90 has 20% larger pixel area compared to Canon N100, it has potential to collect more light on pixel level hence have less noise in low light / High ISO images.
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 S90
or the
Canon N100 ,
including hyperfocal distance.
