Panasonic FH20 has a
14.0MP 1/2.3-inch (6.08 x 4.56 mm ) sized CCD sensor . On the other hand, Fujifilm T400 has a
16.0MP 1/2.3-inch (6.17 x 4.55 mm ) sized CCD sensor .
Below you can see the FH20 and T400 sensor size comparison.
Sensor Size and Resolution Comparison image of Panasonic FH20 and Fujifilm T400 Cameras
Panasonic FH20 and Fujifilm T400 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
Panasonic FH20
or the
Fujifilm T400 ,
including hyperfocal distance.