The Sony a9 may be the most intriguing camera announcement I’ve seen in the past couple of years. Sony has been the major innovator in the full-frame mirrlorless market, and the a9 is replete with innovations, but they are centered on the new 24 megapixel stacked BSI sensor. What is a “stacked” sensor? In this case, it refers to the imaging surface being stacked with integrated RAM, the BIONZ X processor, and the circuitry to connect them, which dramatically increases […]