The sony alpha a77 ii digital slt builds on the successful formula of its predecessor the a77 with speed very much as its priority its 243mp exmor cmos sensor and bionz x processing engine allow images to be captured at 12fps with metering and continuous focus maintained throughout a newly developed focusing system meanwhile boasts 79 phase detect af points incl 15 cross type points spread over an area twice the size of that inside the a77 camera while a new expanded flexible spot op