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Sony's a6400 is a compact 24MP mirrorless interchangeable lens camera with an APS-C sensor that will serve plenty of photographers from family documentarians to pro shooters looking for a lightweight second body. The big news is that it has a new processor based on that used in Sony's sports-shooting flagship a9 which enables 'Real-Time Tracking' autofocus, which is one of the most effective autofocus implementations we've yet seen. It's also among the easiest to use, once you've gotten it set up.

Key specifications:

  • 24MP APS-C sensor
  • 425-pt phase detection AF system with Real-Time Tracking
  • Tilting screen, 180° up, 90° down
  • 2.36M-dot electronic viewfinder
  • New Bionz X processor
  • ISO range from 100-32000
  • 11fps burst shooting (8fps with silent shutter)
  • Interval shooting option added
  • 4K/30p video capture
  • Mic input, no headphone output
  • 410 shots per battery charge (per CIPA)
  • Wi-Fi with NFC and Bluetooth

The Sony a6400 officially replaces the older a6300: it uses the same sensor but comes with some subtle enhancements aside from the impressive autofocus capabilities. It arrives in an increasingly crowded field, though, with cameras like the X-T30 from Fujifilm and the EOS M50 from Canon being similarly priced and with similar sized sensors. Do the enhancements make the a6400 the standout in this crowd? Find out its strengths - and weaknesses - in the pages to follow.

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The a6400 is available now for $899 (€1049) body-only, $999 (€1149) with a 16-50mm F3.5-5.6 Power Zoom kit lens and $1299 (€1449) with an 18-135mm F3.5-5.6 zoom.

What's new and how it compares

Sony's a6400 has an awful lot of refinements on the inside - take a look.

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Body, handling and controls

For better or for worse, the a6400 handles just like the a6300 before it. And the a6000 before that.

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Image quality

The a6400 takes some fantastic photographs, and in particular, has some welcome tweaks to its JPEG engine.

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First impressions

Sony's new Real-Time Tracking is really impressive, but my goodness, can't we get a front control dial?

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Autofocus and performance

Let's dive deep into the a6400's revamped autofocus system, plus we'll show you exactly how to set it up.

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The a6400 is pitched as a vlogging camera, but it has some video capture shortcomings.

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Is the a6400 right for you?

We look at common photographic use-cases and see how the a6400 measures up.

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The a6400 is easily one of the most capable cameras at its price point.

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Sample gallery

Check out our extensive samples gallery from the Sony a6400.

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Want the full list of specifications for the a6400? We have you covered.

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