Fujifilm XP120 has a
16.0MP (6.17 x 4.55 mm ) sized BSI-CMOS sensor . On the other hand, Panasonic ZS50 has a
12.0MP (6.17 x 4.55 mm ) sized CMOS sensor .
Below you can see the XP120 and ZS50 sensor size comparison.
Sensor Size and Resolution Comparison image of Fujifilm XP120 and Panasonic ZS50 Cameras
Fujifilm XP120 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 Panasonic ZS50 has 32% larger pixel area (2.34µm 2 vs 1.76µm 2 ) compared to Fujifilm XP120, it has larger pixel area to collect light hence potential to have less noise in low light / High ISO images.
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
Fujifilm XP120
or the
Panasonic ZS50 ,
including hyperfocal distance.