Both Panasonic ZS30 and Canon 60D have 18.0 MP resolution sensors but Panasonic ZS30's sensor is 1/2.3-inch (6.17 x 4.55 mm ) and Canon 60D's sensor is APS-C (22.3 x 14.9 mm ).
Since Canon 60D's has a larger sensor area with the same resolution, this means that it also has a larger pixel area hence better light collecting capacity for a given aperture compared to Panasonic ZS30.
Below you can see the ZS30 and 60D sensor size comparison.
Sensor Size and Resolution Comparison image of Panasonic ZS30 and Canon 60D Cameras
As seen above, Canon 60D has a 11.8x Larger sensor area than Panasonic ZS30. 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
Panasonic ZS30
or the
Canon 60D ,
including hyperfocal distance.
One thing to watch when comparing these two: they have different sensor sizes
(1/2.3-inch versus APS-C),
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.