Casio EX-H10 has a
12.0MP 1/2.3-inch (6.17 x 4.55 mm ) sized CCD sensor . On the other hand, Nikon S6500 has a
16.0MP 1/2.3-inch (6.17 x 4.55 mm ) sized BSI-CMOS sensor .
Below you can see the EX-H10 and S6500 sensor size comparison.
Sensor Size and Resolution Comparison image of Casio EX-H10 and Nikon S6500 Cameras
Casio EX-H10 and Nikon S6500 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-H10 has 32% larger pixel area compared to Nikon S6500, 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
Casio EX-H10
or the
Nikon S6500 ,
including hyperfocal distance.