Casio EX-FH100 has a
10.0MP 1/2.3-inch (6.17 x 4.55 mm ) sized BSI-CMOS sensor . On the other hand, Casio EX-FC100 has a
9.0MP 1/2.3-inch (6.17 x 4.55 mm ) sized CMOS sensor .
Below you can see the EX-FH100 and EX-FC100 sensor size comparison.
Casio EX-FH100 and Casio EX-FC100 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-FC100 has 11% larger pixel area (3.13µm2 vs 2.81µm2) compared to Casio EX-FH100, it has larger pixel area to collect light hence potential to have less noise in low light / High ISO images.