Samsung HZ25W has a
12.0MP 1/2.3-inch (6.08 x 4.56 mm ) sized CCD sensor . On the other hand, Samsung WB2200F has a
16.0MP 1/2.3-inch (6.17 x 4.55 mm ) sized BSI-CMOS sensor .
Below you can see the HZ25W and WB2200F sensor size comparison.
Sensor Size and Resolution Comparison image of Samsung HZ25W and Samsung WB2200F Cameras
Samsung HZ25W and Samsung WB2200F 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
Samsung HZ25W
or the
Samsung WB2200F ,
including hyperfocal distance.