Ricoh WG-1000 has a
16.0MP 1/2.3-inch (6.17 x 4.55 mm ) sized BSI-CMOS sensor . On the other hand, Olympus Tough-3000 has a
12.0MP 1/2.3-inch (6.08 x 4.56 mm ) sized CCD sensor and features TruePic III processor.
Below you can see the WG-1000 and Tough-3000 sensor size comparison.
Sensor Size and Resolution Comparison image of Ricoh WG-1000 and Olympus Tough-3000 Cameras
Ricoh WG-1000 and Olympus Tough-3000 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
Ricoh WG-1000
or the
Olympus Tough-3000 ,
including hyperfocal distance.