FujiFilm JX350 has a
16.0MP 1/2.3-inch (6.17 x 4.55 mm ) sized CCD sensor . On the other hand, Casio EX-Z280 has a
12.0MP 1/2.3-inch (6.17 x 4.55 mm ) sized CCD sensor .
Below you can see the JX350 and EX-Z280 sensor size comparison.
Sensor Size and Resolution Comparison image of FujiFilm JX350 and Casio EX-Z280 Cameras
FujiFilm JX350 and Casio EX-Z280 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 Casio EX-Z280 has 32% larger pixel area (2.34µm 2 vs 1.77µm 2 ) compared to FujiFilm JX350, it has larger pixel area to collect light hence potential to 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
FujiFilm JX350
or the
Casio EX-Z280 ,
including hyperfocal distance.