Samsung ST90 has a
14.0MP 1/2.3-inch (6.16 x 4.62 mm ) sized CCD sensor . On the other hand, Pentax WG-2 GPS has a
16.0MP 1/2.3-inch (6.17 x 4.55 mm ) sized BSI-CMOS sensor .
Below you can see the ST90 and WG-2 GPS sensor size comparison.
Sensor Size and Resolution Comparison image of Samsung ST90 and Pentax WG-2 GPS Cameras
Samsung ST90 and Pentax WG-2 GPS 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 ST90
or the
Pentax WG-2 GPS ,
including hyperfocal distance.
