Casio EX-H20G has a
14.0MP 1/2.3-inch (6.17 x 4.55 mm ) sized CCD sensor and features Exilim Engine HS processor. On the other hand, Casio EX-ZR15 has a
16.0MP 1/2.3-inch (6.17 x 4.55 mm ) sized CMOS sensor and features Exilim Engine 5.0 processor.
Below you can see the EX-H20G and EX-ZR15 sensor size comparison.
Sensor Size and Resolution Comparison image of Casio EX-H20G and Casio EX-ZR15 Cameras
Casio EX-H20G and Casio EX-ZR15 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 Casio EX-H20G has 14% larger pixel area compared to Casio EX-ZR15, it has potential to collect more light on pixel level hence 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
Casio EX-H20G
or the
Casio EX-ZR15 ,
including hyperfocal distance.
