Canon SX230 HS has a
12.0MP 1/2.3-inch (6.17 x 4.55 mm ) sized BSI-CMOS sensor and features DIGIC 4 with iSAPS technology processor. On the other hand, Panasonic F5 has a
14.0MP 1/2.3-inch (6.08 x 4.56 mm ) sized CCD sensor .
Below you can see the SX230 HS and F5 sensor size comparison.
Sensor Size and Resolution Comparison image of Canon SX230 HS and Panasonic F5 Cameras
Canon SX230 HS and Panasonic F5 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
Canon SX230 HS
or the
Panasonic F5 ,
including hyperfocal distance.