Sony WX500 has a
18.0MP 1/2.3 (6.17 x 4.55 mm ) sized BSI-CMOS sensor and features Bionz X processor. On the other hand, Canon SX210 IS has a
14.0MP 1/2.3-inch (6.17 x 4.55 mm ) sized CCD sensor and features Digic 4 processor.
Below you can see the WX500 and SX210 IS sensor size comparison.
Sony WX500 and Canon SX210 IS 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 Canon SX210 IS has 28% larger pixel area (2.01µm2 vs 1.56µm2) compared to Sony WX500, it has larger pixel area to collect light hence potential to have less noise in low light / High ISO images.