FujiFilm HS10 has a
10.0MP 1/2.3-inch (6.17 x 4.55 mm ) sized BSI-CMOS sensor . On the other hand, Fujifilm S8200 has a
16.0MP 1/2.3-inch (6.17 x 4.55 mm ) sized BSI-CMOS sensor .
Fujifilm S8200's sensor provides 6MP more than FujiFilm HS10's sensor, which gives a significant advantage in real life. You can print your images larger or crop more freely.
On the other hand, please keep in mind that Max sensor resolution is not the only determinant of resolving power. Factors such as the optical elements, low pass filter, pixel size and sensor technology also affects the final resolution of the captured image.
Below you can see the HS10 and S8200 sensor size comparison.
Sensor Size and Resolution Comparison image of FujiFilm HS10 and Fujifilm S8200 Cameras
FujiFilm HS10 and Fujifilm S8200 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.
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 HS10
or the
Fujifilm S8200 ,
including hyperfocal distance.