Samsung HZ15W has a
12.0MP 1/2.3-inch (6.08 x 4.56 mm ) sized CCD sensor . On the other hand, Olympus E-510 has a
10.0MP Four Thirds (17.3 x 13 mm ) sized CMOS sensor .
Below you can see the HZ15W and E-510 sensor size comparison.
Sensor Size and Resolution Comparison image of Samsung HZ15W and Olympus E-510 Cameras
As seen above, Olympus E-510 has a 8.1x Larger sensor area than Samsung HZ15W. Larger sensors give photographer more control on the depth of field and blurry background compared to smaller sensor when shot in 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 HZ15W
or the
Olympus E-510 ,
including hyperfocal distance.
One thing to watch when comparing these two: they have different sensor sizes
(1/2.3-inch versus Four Thirds),
so compare them at the same framing rather than the same focal length.
Put the same focal length on the smaller sensor and it will show less depth of
field, not more, because it also crops tighter. The calculator shows the
full frame equivalent focal length for each body so you can match the framing.