Canon has today announced two new additions to its line of Powershot SD compact cameras, the Powershot SD790 (IXUS 90 in Europe) and the Powershot SD770 (IXUS 85 in Europe). The two models share the same 10MP sensor and 3x (35-105mm equiv.) zoom lens. Key differences are the LCD size (3.0” on the SD790, 2.5” on the SD770) and the design. More after the click...