Canon ELPH 330 HS has a
12.0MP 1/2.3-inch (6.17 x 4.55 mm ) sized BSI-CMOS sensor and features DIGIC 5 processor. On the other hand, Casio EX-ZR700 has a
16.0MP 1/2.3-inch (6.17 x 4.55 mm ) sized CMOS sensor and features EXILIM Engine HS 3 processor.
Below you can see the ELPH 330 HS and EX-ZR700 sensor size comparison.
Sensor Size and Resolution Comparison image of Canon ELPH 330 HS and Casio EX-ZR700 Cameras
Canon ELPH 330 HS and Casio EX-ZR700 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 ELPH 330 HS has 32% larger pixel area compared to Casio EX-ZR700, 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 ELPH 330 HS
or the
Casio EX-ZR700 ,
including hyperfocal distance.