SONY a6400 Sony Alpha a6400 Mirrorless Camera w 16-50mm Lens Review

If you're looking for a compact mirrorless camera that punches above its weight for stills, the Sony a6400 is a classic choice. It's an APS-C camera that's been around for a few years, but its core strength—a blazing-fast autofocus system—keeps it relevant. You're getting a 24.2MP sensor, a tilting touchscreen (though it's fixed and doesn't flip out), and 4K video recording. It's a solid all-rounder for travel, street photography, and even some casual sports shooting, though it's not built for serious vlogging. For around $880 with the kit lens, it sits in a competitive mid-range spot where you're paying for performance, not fancy extras.

The a6400's party trick is its autofocus. It uses Sony's Real-time Eye AF and Tracking, which locks onto subjects like a laser. In our tests, its AF performance landed in the 44th percentile, which sounds average, but in practice, it feels incredibly snappy and reliable for photos. The burst shooting is decent at 11 fps, placing it in the 38th percentile. The sensor quality is in the 30th percentile, which means it's good but not class-leading; you'll get clean, detailed images in good light, but it can struggle a bit with dynamic range compared to newer rivals. Video performance is its weaker side at the 31st percentile. The 4K is sharp, but the lack of in-body stabilization and a fully articulating screen makes handheld video a shaky affair.

At $880 with the 16-50mm kit lens, the a6400 is in a tricky spot. It's not the cheapest APS-C camera, and it's missing features like IBIS that are now common. You're paying a premium for that excellent autofocus system and the Sony ecosystem. If AF speed is your absolute top priority, it's a good value. But if you want more modern video features or better ergonomics, there are compelling alternatives at this price.

This camera faces stiff competition. The Fujifilm X-S20, for a bit more money, offers superior video features, in-body stabilization, and a much better battery life, though its autofocus isn't quite as tenacious as the Sony's. The Canon EOS R7 is a more direct competitor for sports shooters, with faster burst speeds and better stabilization, but it's also larger and more expensive. Even compared to its own family, the newer Sony ZV-E10 is a better pure vlogging camera for less money, but it sacrifices the viewfinder and some stills-focused controls. The a6400's edge is its proven, lightning-fast hybrid AF system in a small body.

So, should you buy the Sony a6400? It depends. If you're a photographer who values autofocus speed above all else—maybe you shoot pets, kids, or casual sports—and you want a compact camera, the a6400 is still a fantastic tool. Its AF feels like magic. But, if you plan to shoot a lot of handheld video, need a flippy screen for vlogging, or want the latest sensor tech, you'll feel its age. For a pure stills shooter on a budget who lives and dies by focus tracking, it's a yes. For a hybrid creator or vlogger, look at the Fujifilm X-S20 or Sony's own ZV-E10 instead.