Olympus FE-47 has a
14.0MP 1/2.3-inch (6.08 x 4.56 mm ) sized CCD sensor and features TruePic III processor. On the other hand, Pentax P80 has a
12.0MP 1/2.3-inch (6.17 x 4.55 mm ) sized CCD sensor and features Prime processor.
Below you can see the FE-47 and P80 sensor size comparison.
Sensor Size and Resolution Comparison image of Olympus FE-47 and Pentax P80 Cameras
Olympus FE-47 and Pentax P80 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
Olympus FE-47
or the
Pentax P80 ,
including hyperfocal distance.