Both Panasonic ZS50 and Canon SX200 IS have 12.0 MP resolution sensors but Panasonic ZS50's sensor is (6.17 x 4.55 mm ) and Canon SX200 IS's sensor is 1/2.3-inch (6.17 x 4.55 mm ).
Since Canon SX200 IS'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 ZS50.
Below you can see the ZS50 and SX200 IS sensor size comparison.
Sensor Size and Resolution Comparison image of Panasonic ZS50 and Canon SX200 IS Cameras
Panasonic ZS50 and Canon SX200 IS have the same sensor sizes so they will provide same level of control over the depth of field when used with 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 ZS50
or the
Canon SX200 IS ,
including hyperfocal distance.
One thing to watch when comparing these two: they have different sensor sizes
( versus 1/2.3-inch),
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.