Canon SX30 IS has a 14.0MP 1/2.3-inch (6.17 x 4.55 mm ) sized CCD sensor and features Digic 4 processor. On the other hand, Casio EX-ZR1000 has a 16.0MP 1/2.3-inch (6.17 x 4.55 mm ) sized CMOS sensor and features EXILIM Engine HS 3 processor.
Below you can see the SX30 IS and EX-ZR1000 sensor size comparison.
Canon SX30 IS and Casio EX-ZR1000 have 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 Canon SX30 IS has 14% larger pixel area compared to Casio EX-ZR1000, it has potential to collect more light on pixel level hence have less noise in low light / High ISO images.