Olympus VR-340 has a
16.0MP 1/2.3-inch (6.17 x 4.55 mm ) sized CCD sensor . On the other hand, FujiFilm S1600 has a
12.0MP 1/2.3-inch (6.17 x 4.55 mm ) sized CCD sensor .
Below you can see the VR-340 and S1600 sensor size comparison.
Sensor Size and Resolution Comparison image of Olympus VR-340 and FujiFilm S1600 Cameras
Olympus VR-340 and FujiFilm S1600 have the same sensor sizes so they will provide same level of control over the depth of field when used with same focal length and aperture. On the other hand, since FujiFilm S1600 has 32% larger pixel area (2.34µm 2 vs 1.76µm 2 ) compared to Olympus VR-340, it has larger pixel area to collect light hence potential to have less noise in low light / High ISO images.
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 VR-340
or the
FujiFilm S1600 ,
including hyperfocal distance.