Sony a6400 Ultimate Review

Sony a6400 Ultimate Review

In this post, we are checking out the Sony’s latest Mirrorless APS-C camera the Sony Alpha 6400. Sony a6400 was just announced. This is a huge upgrade from the a6300 and a small upgrade from the a6500.

RELATED POST: Sony Alpha A6500 Mirrorless Camera Review

This isn’t a full-frame camera like Sony a7 III but it is the latest generation APS-C Mirrorless in the Sony Alpha family. We’ve got a magnesium alloy body here with dust and weather resistant. So judging by body styles the Sony a6500 and the Sony a6400 look very similar.

Flip Screen

There is one huge factor that the Sony a6400 has that the Sony a6500 does not have is a flip screen. This is something that we have been begging Sony to do in any of their full-frame or mirrorless options. A lot of the times you can’t see what you’re filming and most of us we’re always filming ourselves. This is such an exciting thing that I think a lot of you guys are really really gonna love. The screen now flips up 180 degrees and it’s a perfect feature for vloggers.

I’m so glad they finally decided to add a flip screen. The flip screen is not entirely new to Sony. Basically just replicated what they did on the RX100 and attach that to the Sony a6400. One of the challenges with the flip screen is if you use an external microphone you won’t be able to see the screen. These cameras have really good onboard. If you are outside or you’re worried about there’s gonna be wind I would recommend using a microphone.

Photography Features

It is, of course, a 24.2-megapixel camera, looks very familiar. The big news here is the autofocus system which is now an AI-assisted autofocus system. It has 425 phase detection points and 425 contrast detection points making it the world’s fastest autofocus at 0.02 seconds. Sony a6400 has real-time Eye AF system and a real-time tracking system. It is able to discriminate between eyes, faces and it even allows you to switch between left and right eyes and your focus points.

As you’d expect continuous shooting is up a bit with Sony a6400. We now have 11 frames per second with continuous autofocus and auto exposure. That’s up to 116 JPEGs in the buffer and 8 frames per second with silent shooting. There’s also a bit of an ISO upgrade do to improve processing this now features up to 32000.

The a6400 also brings with it the same color processing in science that can be found in Sony’s latest full-frame mirrorless cameras. Including the a9 the a7R III and the a7 III. You can capture still photos from video. It’ll capture 8MP photos from a 4k video and 4MP photos from an HD clip.

Eye AF System

There’s also eye tracking. When you go in to take photos you’ll be able to choose the left or the right eye or have it set up that it will auto determine which eye should be in focus. This is incredible because you always want the eye to be in focus. The Eye AF only works when you’re taking photos but this is so great for when you’re taking portrait shots.

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Video Features

Alright, so a6400 is a Sony Mirrorless camera which means we have to talk about video features. Sony a6400 shoot 4k 30 frames a second and also 24 frames. You can also shoot Full HD in 120 frames a second also 60 frames a second it can also do 4k HDR. It also has support for S-log2 and S-log3. So if you are looking to color grade some of your footage that is something that Sony a6400 will be able to provide you with. Sony a6400 is the first Sony Mirrorless APS-C camera that has HLG (Hybrid Log-Gamma) and proxy recording. 

Interval Recording

Another really cool thing is Sony a6400 does interval shooting for time lapses which is huge. So you’ll be able to create 4k time lapses you could shoot a JPEG and RAW. Depending upon what quality you’re looking for and you can make the choice or you can shoot with both. The intervals can be set anywhere from 1 to 60 seconds and you can shoot from 1 to 9999 shots.

Most of the new cameras that Sony has been releasing they’ve removed the PlayMemories App from the camera. We used to use that a lot to do time-lapse videos and photos and all kinds of things. Then now that option isn’t available being able to have built-in interval shooting is incredible. Sony will shortly be releasing some software so it’ll make it super easy to put those together on your phone or on your computer. But you can just use Final Cut or Adobe Premiere or if you guys have a time-lapse app already that does it for you, you can use that.

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S&Q Option

This now has an S&Q option which is right on the wheel. This is something that most of the high-end cameras have and that stands for Slow and Quick. This allows you to easily create slow-mo videos. This was available on the previous version of the Sony a6500 but it wasn’t on the menu dial. It’s really great to be able to just flip that switch go to the S&Q and on this camera, you can film 120 frames a second in slo-mo. Another little trick that I like to do is if you turn the frame rate to 1 that’ll also allow you to do time-lapse videos.

Obviously, the time-lapse video on the S&Q setting isn’t as good as if you do the interval shooting because you’re getting those high-resolution photos can tell the quality difference. S&Q option is super easy, super simple it basically makes the video for you so you don’t have to do any post-production. But if you do want that higher quality video I definitely recommend trying out the interval shooting.

Proxy Recording

Something else that is new in Sony a6400 is you can do the proxy recording. If you do have a slower machine or if you’re having someone else edit your videos you can send them the proxy files. But what’s great is you won’t have to render those out from your original 4k clips. This will automatically save those for you.


Being able to have super fast autofocus is so important. One of the things that I do like is Sony a6400 have a touchscreen you can turn that on or you can turn that off. This is also good if you’re just out and about shooting. Because you’re able to touch the track, it is doing some really great face tracking so even your subject stepping behind things and hiding as soon as he/she reappears it automatically picks up his/her face. This is also great if you are vlogging as well. Because you are able to keep your face on focus.

Limitless Video Recording

Probably one of the most exciting things is Sony a6400 doesn’t have the 29-minutes limit. This is huge because all of these other Sony cameras they end up cutting video recording 29 minutes. But Sony a6400 extends that limit. There’s a lot of factors that go into play as to “How long this will record?”. It will record along within 29 minutes but if you don’t have an SD card that can hold more than 29 minutes or your SD card is full or it’s really hot in the room your camera may overheat and then shut off. Which is a good thing because that’s preserving your camera. But there is an option that you can go in and turn that off so camera will stay recording even if it is at a higher temperature.

Battery Life

The battery life on the older Sony cameras like the a7S II, the a6500, the a6300, and the a6400 they all use the same batteries. It’s not new information but these batteries do not last very long at all. I did notice the battery life does seem to be a little bit better than the a6500. But it still is along those same lines because it is the same battery. My recommendation to you if you do have the a7S II or the a6500 or you do plan on upgrading to the a6400 get yourself some extra batteries.


One of the main highlights and probably most of you guys are wondering how much does Sony a6400 cost. The price for just the Sony a6400 body is $900 which is actually really good because the price of the Sony RX100 is almost like a $1000 maybe even over a $1000 if you get some of the other packages.

So not only are you getting an incredible camera but you’re getting the option to have interchangeable lenses. Which is huge because you can change the look of your photos and videos so easily by switching out lenses. Obviously, that’s not new information to most of you but for some of you, it may be. With the Sony 16-50mm Power Zoom Lens that’ll run you $1,100 and with the Sony 18-135mm F3.5-5.6 Lens will run you $1300. I really like Sony 18-135mm F3.5-5.6 Lens it’s great, it’s super versatile and even though it is an 18mm it’ll probably act as about a 24mm when you’re holding it out filming yourself. It’s just the right length to fit yourself in the frame and yet zoom options to be able to get up and close to get really cool close-up shots.

RELATED POST: Zeiss Batis 18mm f/2.8 Lens Review

If you are looking to save some money but still want to get a fairly decent lens I would definitely recommend Sony 16-50mm Power Zoom Lens. It gets the job done. It also makes your camera super light.

Sony a6400 Specifications

MSRP $900 (body only), $1000 (w/16-50mm lens), $1300 (w/18-135 lens)
Body type
Body type Rangefinder-style mirrorless
Body material Magnesium alloy
Max resolution 6000 x 4000
Image ratio w:h 1:1, 3:2, 16:9
Effective pixels 24 megapixels
Sensor photo detectors 25 megapixels
Sensor size APS-C (23.5 x 15.6 mm)
Sensor type CMOS
Processor Bionz X
Color space sRGB, Adobe RGB
Color filter array Primary color filter
ISO Auto, 100-32000 (expands to 102800)
Boosted ISO (maximum) 102800
White balance presets 10
Custom white balance Yes
Image stabilization No
Uncompressed format RAW
JPEG quality levels Extra fine, fine, standard
File format
  • JPEG (Exif v2.31)
  • Raw (Sony ARW)
Optics & Focus
  • Contrast Detect (sensor)
  • Phase Detect
  • Multi-area
  • Center
  • Selective single-point
  • Tracking
  • Single
  • Continuous
  • Touch
  • Face Detection
  • Live View
Autofocus assist lamp Yes
Manual focus Yes
Number of focus points 425
Lens mount Sony E
Focal length multiplier 1×
Screen / viewfinder
Articulated LCD Tilting
Screen size 3
Screen dots 921,600
Touch screen Yes
Screen type TFT LCD
Live view Yes
Viewfinder type Electronic
Viewfinder coverage 100%
Viewfinder magnification 0.7×
Viewfinder resolution 2,359,296
Photography features
Minimum shutter speed 30 sec
Maximum shutter speed 1/4000 sec
Exposure modes
  • Program
  • Aperture priority
  • Shutter priority
  • Manual
Scene modes
  • Portrait, Sports Action, Macro, Landscape, Sunset, Night Scene, handheld Twilight, Night Portrait, Anti-Motion Blur
Built-in flash Yes
Flash range 6.00 m (at ISO 100)
External flash Yes (via hot shoe)
Flash modes Off, auto, on, slow sync, rear sync, redeye reduction, wireless, hi-speed sync
Flash X sync speed 1/160 sec
Drive modes
  • Single shooting
  • Continuous
  • Self-timer
  • Bracketing (AE, WB, DRO)
Continuous drive 11.0 fps
Self-timer Yes
Metering modes
  • Multi
  • Center-weighted
  • Highlight-weighted
  • Average
  • Spot
Exposure compensation ±5 (at 1/3 EV, 1/2 EV steps)
AE Bracketing ±5 (3, 5 frames at 1/3 EV, 1/2 EV, 2/3 EV, 1 EV, 2 EV steps)
WB Bracketing Yes
Videography features
Format MPEG-4, H.264
  • 3840 x 2160 @ 30p / 100 Mbps, XAVC S, MP4, H.264, Linear PCM
  • 3840 x 2160 @ 30p / 60 Mbps, XAVC S, MP4, H.264, Linear PCM
  • 3840 x 2160 @ 24p / 100 Mbps, XAVC S, MP4, H.264, Linear PCM
  • 3840 x 2160 @ 24p / 60 Mbps, XAVC S, MP4, H.264, Linear PCM
  • 1920 x 1080 @ 120p / 100 Mbps, MOV, H.264, Linear PCM
  • 1920 x 1080 @ 120p / 60 Mbps, MOV, H.264, Linear PCM
  • 1920 x 1080 @ 60p / 25 Mbps, MOV, H.264, Linear PCM
  • 1920 x 1080 @ 60i / 24 Mbps, AVCHD, MTS, H.264, AAC
  • 1920 x 1080 @ 50i / 17 Mbps, AVCHD, MTS, H.264, AAC
  • 1920 x 1080 @ 30p / 16 Mbps, MOV, H.264, Linear PCM
Microphone Stereo
Speaker Mono
Storage types SD/SDHC/SDXC/Memory Stick DUO (UHS-I compliant)
USB USB 2.0 (480 Mbit/sec)
USB charging Yes
HDMI Yes (micro-HDMI)
Microphone port Yes
Headphone port No
Wireless Built-In
Wireless notes 802.11b/g/n + NFC + Bluetooth 4.1
Remote control Yes (via smartphone)
Environmentally sealed Yes
Battery Battery Pack
Battery description NP-FW50
Battery Life (CIPA) 410
Weight (inc. batteries) 403 g (0.89 lb / 14.22 oz)
Dimensions 120 x 67 x 60 mm (4.72 x 2.64 x 2.36)
Other features
Orientation sensor Yes
Timelapse recording Yes
GPS None


Watch Sony announce Next-Generation α6400 Mirrorless Camera With Real-time Eye Autofocus, Real-time Tracking & World’s Fastest Autofocus. Also announced, the α9 Camera Upgrade Through Major Firmware Updates and Imaging Edge App updates.

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