FujiFilm Finepix Z90 has a
14.0MP 1/2.3-inch (6.17 x 4.55 mm ) sized CCD sensor . On the other hand, Panasonic FX48 has a
12.0MP 1/2.3-inch (6.08 x 4.56 mm ) sized CCD sensor .
Below you can see the Finepix Z90 and FX48 sensor size comparison.
Sensor Size and Resolution Comparison image of FujiFilm Finepix Z90 and Panasonic FX48 Cameras
FujiFilm Finepix Z90 and Panasonic FX48 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
FujiFilm Finepix Z90
or the
Panasonic FX48 ,
including hyperfocal distance.