Canon SX20 IS has a
12.0MP 1/2.3-inch (6.17 x 4.55 mm ) sized CCD sensor and features Digic 4 processor. On the other hand, Panasonic ZS25 has a
16.0MP 1/2.3-inch (6.08 x 4.56 mm ) sized CMOS sensor .
Below you can see the SX20 IS and ZS25 sensor size comparison.
Sensor Size and Resolution Comparison image of Canon SX20 IS and Panasonic ZS25 Cameras
Canon SX20 IS and Panasonic ZS25 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 SX20 IS
or the
Panasonic ZS25 ,
including hyperfocal distance.
