Canon D20 has a
12.0MP 1/2.3-inch (6.17 x 4.55 mm ) sized CMOS 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 D20 and ZS25 sensor size comparison.
Sensor Size and Resolution Comparison image of Canon D20 and Panasonic ZS25 Cameras
Canon D20 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 D20
or the
Panasonic ZS25 ,
including hyperfocal distance.
