Kodak M550 has a
12.0MP 1/2.3-inch (6.17 x 4.55 mm ) sized CCD sensor . On the other hand, Panasonic FH25 has a
16.0MP 1/2.3-inch (6.08 x 4.56 mm ) sized CCD sensor and features Venus Engine VI processor.
Below you can see the M550 and FH25 sensor size comparison.
Sensor Size and Resolution Comparison image of Kodak M550 and Panasonic FH25 Cameras
Kodak M550 and Panasonic FH25 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
Kodak M550
or the
Panasonic FH25 ,
including hyperfocal distance.