Both Canon N Facebook ready and Panasonic ZS50 have 12.0 MP resolution sensors but Canon N Facebook ready's sensor is 1/2.3-inch (6.17 x 4.55 mm ) and Panasonic ZS50's sensor is 1/2.3 (6.17 x 4.55 mm ).
Since Panasonic ZS50'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 Canon N Facebook ready.
Below you can see the N Facebook ready and ZS50 sensor size comparison.
Canon N Facebook ready and Panasonic ZS50 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. On the other hand, since Canon N Facebook ready has 33% larger pixel area compared to Panasonic ZS50, it has potential to collect more light on pixel level hence have less noise in low light / High ISO images.