Canon SD980 IS has a
12.0MP 1/2.3-inch (6.17 x 4.55 mm ) sized CCD sensor and features Digic 4 processor. On the other hand, Sony TX55 has a
16.0MP 1/2.3-inch (6.17 x 4.55 mm ) sized BSI-CMOS sensor and features BIONZ processor.
Below you can see the SD980 IS and TX55 sensor size comparison.
Sensor Size and Resolution Comparison image of Canon SD980 IS and Sony TX55 Cameras
Canon SD980 IS and Sony TX55 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 SD980 IS has 32% larger pixel area compared to Sony TX55, 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 SD980 IS
or the
Sony TX55 ,
including hyperfocal distance.
