Panasonic FS25 has a
12.0MP 1/2.3-inch (6.08 x 4.56 mm ) sized CCD sensor . On the other hand, Samsung WB800F has a
16.0MP 1/2.3-inch (6.17 x 4.55 mm ) sized BSI-CMOS sensor .
Below you can see the FS25 and WB800F sensor size comparison.
Sensor Size and Resolution Comparison image of Panasonic FS25 and Samsung WB800F Cameras
Panasonic FS25 and Samsung WB800F 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 FS25
or the
Samsung WB800F ,
including hyperfocal distance.