Both Panasonic FZ28 and Canon SX10 IS have 1/2.3-inch sized 10.0 MP resolution sensors so sensor size and resolution is not a differentiator between these two cameras.
Below you can see the FZ28 and SX10 IS sensor size comparison.
Sensor Size and Resolution Comparison image of Panasonic FZ28 and Canon SX10 IS Cameras
Panasonic FZ28 and Canon SX10 IS 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
Panasonic FZ28
or the
Canon SX10 IS ,
including hyperfocal distance.
