Pentax WG-3 GPS has a
16.0MP 1/2.3-inch (6.17 x 4.55 mm ) sized BSI-CMOS sensor . On the other hand, Kodak Z1485 IS has a
14.0MP 1/1.72-inch (7.4 x 5.55 mm ) sized CCD sensor .
Below you can see the WG-3 GPS and Z1485 IS sensor size comparison.
As seen above, Kodak Z1485 IS has a 1.5x Larger sensor area than Pentax WG-3 GPS. Larger sensors give photographer more control on the depth of field and blurry background compared to smaller sensor when shot in same focal length and aperture.