Casio EX-S7 has a
12.0MP 1/2.3-inch (6.17 x 4.55 mm ) sized CCD sensor and features Exilim Engine 5.0 processor. On the other hand, Panasonic FH8 has a
16.0MP 1/2.3-inch (6.08 x 4.56 mm ) sized CCD sensor .
Below you can see the EX-S7 and FH8 sensor size comparison.
Sensor Size and Resolution Comparison image of Casio EX-S7 and Panasonic FH8 Cameras
Casio EX-S7 and Panasonic FH8 have almost the same sensor size, so neither of them has any significant advantage over the other in terms of providing control over depth of field when used with the same focal length and aperture.
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-S7
or the
Panasonic FH8 ,
including hyperfocal distance.