The World's Fastest Autofocus - at an acquisition speed of 0.02 secs, 425 phase-detection and contrast-detection AF points that cover 84% approx. image area. Sony Alpha a6400A with PZ 16-50mm F3.5-5.6 OSS II Lens The big headline on the launch of the Alpha A6400 is Sony's claim to the World's Fastest (0.02second) Auto Focus acquisition. Combined with this, are features like 425 phase detection and contrast detection AF points that cover approx 84% image area. Unrivalled AF performance from 425 phase-detection AF points combined with contrast-detection; will give you a mindblowing - world's fastest 0.02-sec speed Accurate focusing, even in darker situations-with the latest in Sony's algorithms, the camera's AF limit has been reduced to operate as low as EV-2 when AF-S mode is active. Eye AF enables you to select and track your subject's eye. Perfect for producing detailed portrait photographs. Autofocus with realtime tracking. If you're tracking a fast s