Sony just packed a 1" stacked CMOS sensor into the Xperia Pro-I, but there's a catch

Sony has unveiled the Xperia Pro-I, its latest flagship smartphone with a triple camera array and a particularly headline-grabbing feature: for its main camera, it uses the same 20MP 1"-type stacked CMOS sensor with built-in memory and phase-detection autofocus as the one inside Sony's RX100 VII compact camera. But there's a catch: only a central 12MP section of that sensor is covered by the imaging circle of the main lens and, therefore, used for the final image, which has some broad implicatio...