Casio EX-ZS5 has a
14.0MP 1/2.3-inch (6.16 x 4.62 mm ) sized CCD sensor and features Exilim Engine 5.0 processor. On the other hand, Pentax W60 has a
10.0MP 1/2.3-inch (6.08 x 4.56 mm ) sized CCD sensor .
Below you can see the EX-ZS5 and W60 sensor size comparison.
Casio EX-ZS5 and Pentax W60 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.