Key Features
The Sony a6400 is a follow-up to the three-year-old a6300, and shares some features with the more expensive a6500. It has a lot of things going for it — like reliably good image quality and a fast hybrid AF system — but those positive traits are buried under a bedrock of convoluted menus and awkward ergonomics. Everything great about this camera is hidden under a menu, overshadowed by caveats, or not present at all. The main highlights are the Real-time Eye AF and Tracking autofocus features, an updated image processor, and a 180-degree flipping touchscreen. A majority of the a6400’s improvements revolve around its updated hybrid autofocus system with more focus points; a total of 425 contrast and 425 phase-detection points, besting the a6300 and a6500’s 169 contrast AF points. It can even hold a candle to Sony’s best full-frame cameras, covering 84 percent of the image area compared to 93 percent on the Alpha A9.
