Both Casio EX-Z2000 and Casio EX-ZS5 have 1/2.3-inch sized 14.0 MP resolution sensors so sensor size and resolution is not a differentiator between these two cameras.
Below you can see the EX-Z2000 and EX-ZS5 sensor size comparison.
Sensor Size and Resolution Comparison image of Casio EX-Z2000 and Casio EX-ZS5 Cameras
Casio EX-Z2000 and Casio EX-ZS5 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
Casio EX-Z2000
or the
Casio EX-ZS5 ,
including hyperfocal distance.
