Sony Alpha a6400 Review

The Alpha A6400 is Sony’s new APS-C mirrorless camera, slotting in below the Alpha A6500 in the number, and replacing the Alpha A6300.

Nevertheless, with Sony equipping the Alpha A6400 with a few of its latest tech, especially the advanced AF system, this camera could, in fact, prove a far more tempting proposition than the top-of-the-range A6500, a camera that’s now a lot more than two years old.

Sony Alpha a6400 Price, Deals and Bundle

Just like the Sony A6300 and A6500, Sony a6600,  the Alpha A6400 features a 24.2MP APS-C Exmor CMOS sensor, but because of a front-end LSI and the latest BIONZ X image processor chip, Sony reckons processing speeds are 1.8x faster compared to the A6300 can manage.


These enhancements also have allowed Sony to stretch out the brand new camera’s ISO ceiling to an extended upper limit of 102,400, compared to the A6500’s 51,200 (the A6400’s indigenous range is 100-32,000), while Sony also says color reproduction has been greatly improved.

One big omission from the A6400 is any form of in-body image stabilization, something the A6500 enjoys using its 5-axis program. A6400 users will need to rely on lens-based stabilization, even though a whole lot of Sony’s APS-C-particular zoom lenses feature the business’s Optical SteadyShot (OSS), a lot of its primes usually do not.

The Alpha A6400 features the same electronic viewfinder (EVF) as the A6100, A6300, and A6500, with a 2.36 million-dot unit with 0.7x magnification. Gleam 3.0-inch display on the trunk of the camera with a modest 921K-dot resolution. This screen is touch-allowed, unlike the main one on the A6300, but just a little annoyingly it still has the same 16:9 aspect ratio – that’s great if you are going to be capturing video regularly, nonetheless it sees the display shrink for stills, with dark bars at either side of the picture. Something vloggers will welcome, meanwhile, is the fact that the display could be tilted upwards 180 degrees, helping you to frame yourself easily.

It’s not simply the screen that’s more likely to charm to vloggers though, with the A6400’s good video credentials certain to end up being a big draw. Included in these are 4K video catch (using 6K oversampling) at 100Mbps, while there’s also S-log3 and S-log2 support for post-production, along with 4K HDR (HLG) recording. The A6400 also offers a mic jack and works with XLR adapters; nevertheless, as on previous A6000-series cameras, there is no headphone jack. You’ll have the ability to transfer 4K video right to your smartphone via Sony’s new Imaging Advantage Mobile application when it launches in March – this replaces the PlayMemories app, and can also offer remote control camera control, in addition to having an overhauled interface.

Build and handling

Sony says the construction of the Alpha A6400 has been upgraded over the A6300, although it isn’t clear exactly how or where. In any event, the Alpha A6400 includes a magnesium alloy body that can be sealed against dirt and moisture. Sony’s also bolstered the shutter, which includes a lifespan of 200,000 cycles – dual that of the A6300.

There’s a fairly decent-sized handgrip, with your body of the A6400 carrying out a practically identical form factor to other A6000-series cameras. The A6400 also features the same control design to the A6300, with adequate well-marked controls at the rear, plus a free-moving control steering wheel that enables you to navigate menus and scrutinize images with ease.

However, as on all Sony’s additional cameras, touchscreen features is bound to tap focus, tap shutter and defining topics for tracking; you are not able to navigate the A6400’s comprehensive menu system, although it has been refreshed over the A6300’s user interface, with six color-coded sub-menus which makes it that little bit easier to navigate.

A nice addition may be the My Dial feature, which allows you to repurpose the Alpha A6400’s main command dial and back scroll when you press or keep a custom button. Which isn’t limited to just one single set of features – you can configure up to three pieces, assigning them to split up custom control keys or one which cycles between them.


To partner, the advanced AF program, the Alpha A6400 may shoot at up to 11fps with both AF and AE. The buffer functionality has been improved over the A6300’s, with the A6400 in a position to shoot a complete of 116 JPEG pictures when compared to A6300’s 30, while for raw shooting, the capability has been increased from 21 to 46 shots (although interestingly the A6500 gets the upper hand right here, capturing 200 JPEGs in a single burst at 11fps or 107 raw files). If you want to shoot silently, you can do so at 8fps.

So far as metering goes, we found the A6400 to mainly be considered a reliable performer, with simply an intermittent bias towards underexposure; that is negligible though, and it’s really often by just around fifty percent or a third of an end, so can easily be remedied with some exposure compensation, or in post-capture natural processing.

The A6400’s auto white balance system, meanwhile, does an excellent job of faithfully reproducing colors in a variety of conditions, even impressing under typically problematic artificial sources.

As Sony has stuck with the same EVF as on both A6300 and Sony A6500 there are zero surprises here, with good quality and magnification for a camera as of this price. We did discover that sound and lag improved in darker circumstances, but this isn’t exclusive to the A6400, and the image continues to be perfectly useable.

The battery was not upgraded to the newer Z-series battery power found in the most recent full-frame Sony cameras, so battery life is a modest 360 shots if you’re using the viewfinder regularly, while this can be stretched to 410 shots if you are happy to depend on the rear screen. The Alpha A6400 is billed via USB, although a mains electric battery charger comes separately.


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