The Sony X850E 4k LED TV offers better than average picture quality and excellent motion handling but lacks a handful of high-end features. It does best in darker environments, but it's still capable of getting bright enough to be used in lit rooms without issue. Unfortunately, it isn't the best fit for wider living rooms because of its narrow viewing angle.
The design of the X850E is sleek and minimalistic, in line with other Sony TVs. The familiar center stand supports the TV well, and provides some basic cable management. The borders are quite thin and the build quality is good as everything feels firm.
The central stand supports the TV well and feels stable enough, but the plastic isn't as good as last year's metal stand on the X850D. It has a small footprint, ideal for those with narrower tables, and allows for some basic cable management down the rear tracks.
Footprint of the 65" TV stand: 10.4" x 19.8"
The rear of the TV is quite basic, and if wall mounted some of the inputs may be difficult to access.
The borders are thin and look good. They are made of metal and feel sleek.
The TV appears quite thin when viewed from the side. The stand leans the TV back slightly but this isn't an issue.
The TV gets warm at the bottom due to the row of LEDs that lights the backlight, however this should not be a problem during normal usage.
The build quality of the X850E is good. Screws hold the back together very firmly and there is no give around the frame.
The Sony X850E has good picture quality. The excellent contrast ratio and black uniformity result in a very good movie experience, especially when set in a dark room. Bright room performance is decent, the SDR peak brightness paired with the reflection performance is just enough to fight glare from a bright light or window. The good gray uniformity of the X850E makes for a good sports experience without dirty screen effect, but due to the X850E's very narrow viewing angle it is better suited to a narrow seating area. The HDR performance is decent with a good color reproduction, but is limited by the lack of local dimming and HDR peak brightness.
The Sony X850E has a good contrast ratio. At around 4500:1, it is a big step up from the 2016 X850D (IPS TV) which had a contrast ratio of only 1248:1. The higher contrast ratio of the X850E results in deeper blacks which in turn make this TV a good choice for watching movies in a dark room.
Update 05/12/2017: Readers have reported that the 75" model has an IPS panel, so the contrast ratio is expected to be around 1000:1.
The X850E does not have a local dimming feature. Video for reference only.
Good SDR peak brightness, very similar to last year's X850D. The brightness remains relatively constant no matter the content shown, because the TV lacks local dimming and uses very little frame dimming. The real scene brightness is a little less because it is measured near the edge of the screen where the TV is a bit less bright. A plot of brightness over time is found here, and shows that the TV's brightness doesn't decrease over time even when showing a static image.
Decent HDR peak brightness, very similar to the X850D from last year. The TV lacks local dimming and shows very little frame dimming, so the brightness remains relatively constant for all content shown. The screen was brightest in the middle and less bright near the edges, so the real scene brightness is a little less because it was measured near the edge. A plot of HDR peak brightness over time can be found here, and shows that the TV remains bright even after showing a static image for a long time.
The overall gray uniformity of the X850E is good. The uniformity of the 50% gray is a bit worse than the 5%, and while looking at the test picture, you can see that both sides and the top of the screen are darker than the center of the screen. Luckily, there is not much dirty screen effect visible on this TV and sports does not suffer much from it since the center of the screen is pretty much even.
Looking at the test picture of the 5% gray you can see that that the sides are a bit more bright than the rest of the picture, but this is more related to the narrow viewing angle of the X850E than to a uniformity problem.
Poor viewing angle. Colors shift and blacks become gray when the TV is viewed on the side. People sitting to the side of the TV will not have as good picture quality as people sitting directly in front. Last year's X850D has a much better viewing angle because it has an IPS panel.
Update 05/12/2017: Readers have reported that the 75" model has an IPS panel, so expect the viewing angle to be more similar to the X850D we tested in 2016.
The black uniformity of the X850E is excellent, and it is a significant improvement over the 2016 X850D. Looking at the test picture, some really faint clouding can be seen in each corner, but this is really not a problem, and it doesn't show up when watching regular content. When set in a dark room, the X850E really does a good job as displaying dark scenes when watching movie.
Since it does not have local dimming, some clouding may be visible when displaying a bright highlight, but it is not because of native black uniformity problems but more a limitation of the backlight technology used in this TV.
The X850E has a semi-gloss finish which diffuses reflections across the screen, reducing their intensity. For an average room this is not an issue, but for very bright rooms the glare may be too much.
Before calibration, the color accuracy X850E is a bit off. The white balance dE is high but should not be a problem. The color dE is a bit more accurate and should not be a problem even for enthusiast owners. As for the gamma, the X850E tracking is a bit off, but the difference is minor and also should not cause any issues.
Calibration of the X850E is easy and pretty fast to do. The white balance dE was brought down considerably, and the gamma curve flattened to closely track our goal of 2.2. The color dE was also brought down, but could not be brought down further, since, like other Sony TV, there is no color space management.
You can see our recommended settings here.
Low quality content such as cable is upscaled well. Minor halo artifacts can be seen but the image isn't too soft.
Upscaling of 720p content is good. Lines appear smooth and the image retains details.
1080p content such as Blu-rays are upscaled well. The image looks sharp.
1080p is upscaled differently from most TVs. See our Additional Review Notes.
Wide color gamut. The TV is able to show saturated colors well. When the TV tries to show DCI P3 green it falls quite short, but when trying to show Rec 2020 green it can get more saturated.
Mediocre color volume. The TV is able to show its wide color gamut at high and mid brightness levels, but it's not as good with dark colors because it can't dim them as well as a TV with local dimming.
The X850E can display our gradient test image without any signs of banding typically seen on 8-bit panel. There are not too many problems that can be noticed, besides some little imperfections in the darker shades of colors. This is fairly good and should not present any problems while watching regular content.
The Sony X850E does not show any signs of image retention like most of TVs using VA panel. Right after the 10 minutes burn-in scene no retention is visible.
We don't expect VA panels to experience permanent image retention, as the VA panel in our long-term test appears immune.
The X850E has excellent motion handling due to the fast response time. Only a short trail can be seen following fast moving objects. The backlight doesn't flicker by default which is great, but it is possible to enable flicker to clear up motion. Movies from a Blu-ray player appear smooth, but some minor judder is present when watching movies from a home theater PC or cable box. This isn't noticeable for most people so isn't an issue. The TV has a 120Hz panel which can interpolate lower frame rate content.
The response time of the X850E is excellent, resulting in only a short trail following moving objects. Some overshoot is present but this is a minor issue and helps to reduce blur.
The backlight doesn't use PWM by default, which is great as it helps to smooth motion. It does still have a small flicker, but this shouldn't be noticeable to most people.
It is possible to enable a strong flicker to clear up motion by setting 'MotionFlow' to 'Custom' and increasing the 'Clearness' slider. This is also possible when in the 'Game' or 'Graphics' picture modes, unlike on the X690E.
The X850E has a 120Hz panel which can interpolate lower frame rate content and produce a strong soap opera effect. To do so, set 'MotionFlow' to 'Custom' and increase the 'Clearness' slider. Adjusting 'Cinemotion' will change the threshold for interpolation. Set it to 'High' for the strongest soap opera effect'. Note that motion interpolation will introduce artifacts on any TV.
This Sony TV is good at displaying content smoothly, without stutter due to low frame rates. This is due to the pixel response time, which smooths the transitions between each frame.
The X850E can play 24p movies from DVD and Blu-ray players and native streaming apps without judder. Movies playing from a 60p/60i source such as a cable/satellite box are also able to play smoothly without judder.
To be able to display movies from 24p source without judder the 'Motionflow' option must be set to 'True Cinema' and 'CineMotion' set to 'high'.
Update 10/17/2017: With the latest firmware (PKG6.2669.0070NAA) the judder over 60Hz signals has been fixed.
The X850E has a native 120Hz panel, but doesn't support any variable refresh rate features such as FreeSync and G-Sync.
The X850E has a variety of inputs and its HDMI ports support all the common input signals. In game and graphics mode it has low input lag and should feel responsive when playing video games or interacting with a PC. Note: Only HDMI ports 2 & 3 support full bandwidth, but HDMI port 3 is also the audio return channel. If you have a receiver which supports ARC and more than 1 device which requires the full bandwidth of HDMI then you might have some issues connecting all of your devices. In this case it may be best to connect your receiver using an optical (Toslink) cable.
Low input lag. When in the game or graphics picture modes the TV has ~33 ms of input lag, which is good enough for most gamers. The ~2 ms difference between 4k and 1080p input lag is negligible.
Update 05/23/2017: The TV has been retested after the update to Android TV 7.0 Nougat, and the input lag is unchanged.
Update 07/18/2017: The TV has been tested with the newest firmware update (PKG6.2648.0065NAA). The input lag remains the same.
Update 09/05/2017: Note that the input lag in the 'Game' picture mode is unaffected by the 'Reality Creation' option, whether set to 'Off’, ‘Auto’ or ‘Manual’ across the range of the ‘Resolution’ slider.
Update 09/20/2017: Tested 1080p @ 120 Hz input lag using our new input lag tool. It is much faster than the 1080p @ 60 Hz input lag, likely due to the TV bypassing some processing when it detects such an unusual signal.
Update 11/10/2017: Retested input lag with the latest firmware (PKG6.2669.0070NAA); there was no significant change.
All the common input resolutions are supported. Chroma 4:4:4 is supported in the game or graphics picture modes. Only HDMI inputs 2 and 3 support 4k @ 60Hz @ chroma 4:4:4 or 4:2:2, and only when 'HDMI Enhanced Format' is enabled.
On a PC the default resolution is 1080p @ 60 Hz but the resolution can easily be changed to 4k. 1080p @ 120 Hz @ 4:4:4 is supported but doesn't appear by default, so a custom resolution is needed.
Update 06/12/2018: A note for Xbox One X and Xbox One S owners: 1080p @ 120 Hz from the Xbox is only supported on this TV when the Xbox's connection type is changed from Auto-detect (Recommended) to HDMI: (Xbox > Settings > Display & sound > Video fidelity & overscan > Display > Connection > HDMI). Unfortunately in this mode 4k, HDR, 50 Hz and 24 Hz aren't possible, so this mode is only recommended when the higher refresh rate of 120 Hz is more important to you than these other features.
Update 06/18/2018: Correction, 24 Hz and 50 Hz are in fact possible with the Xbox's connection type set to HDMI.
On the rear of the TV there is a shared component/composite input which does not require an adapter. There is an additional composite input on the side, but an adapter is not included. Here is an example of the required adapter.
The Sony X850E provides a subpar audio experience. It isn't unusable, but it will greatly benefit from something like a soundbar.
Below average frequency response. Volume gets sufficiently loud, but a steep bass peak leads a boomy sound signature. A slight amount of compression is present at higher volumes as well.
The X850E unfortunately produces a lot of distortion at higher volumes. It remains fairly contained under 80dB, it quickly gets more pronounced past that point.
The Sony X850E runs Android TV, which tends to be more difficult to navigate than other smart platforms but also has access to the Google Play Store, which has more apps and content than many other platforms. The 'Action Menu' button on the remote helps to relieve the navigation problem by showing a quick list of many common settings so users don't often have to navigate to the main settings menu. The remote's voice search button also helps with navigation by allowing the user to open apps and search for content directly.
The TV's main interface doesn't have any ads, but third party apps may contain ads. There is an option in the TV to opt out of personalized advertising for these ads in apps.
The first row on the Home screen shows suggested content. It is possible to disable all sources of suggested content until all that remains is a line saying "No recommendations available at this time". However after all sources of suggested content have been disabled and the TV has been restarted more sources will appear that were not listed before, so the process must be repeated a few times.
The TV comes with a lot of apps already installed such as Netflix, YouTube and Amazon Video. It also has access to the Google Play Store which has a vast library of apps and content.
The remote is rather large and has a lot of buttons. A cluster of buttons around the direction pad serves as the centerpiece of the remote, and ensures that most of the common buttons are within easy reach. The remote has a microphone for voice search, which is activated by pressing the microphone button.
Update 12/11/2017: Google Assistant has now been added to Android TV on Sony TVs, and it brings a lot of new features to the voice control: commands like 'open Netflix', 'switch to HDMI 1', 'pause video', 'how's the weather' and 'turn off TV' all work well, though commands to change picture settings like 'set the brightness to 20' and 'switch to Game mode' don't work. The remote score has been increased to reflect the new fuctionality.
Update 09/12/2017: Sony has an app called 'Video & TV SideView' that's better than Google's Android TV app in most ways. The data fields and score have been updated to reflect the Sony app.
Update 07/11/2018: Sony's Video & TV SideView remote app has been retested on version 5.5.0. The remote app can now stream video files and can only directly launch apps. The data fields have been updated.
Update 10/12/2018: The remote app can directly launch both apps and inputs, even on version 5.5.0; "Apps Only" was a mistake. The value has been corrected to "Both".
There are three buttons that allow basic settings to be changed without using the remote, such as input, volume and channel.
We tested the 65" (XBR65X850E).
Update 05/12/2017: Readers have reported that the 75" model has an IPS panel, resulting in a lower native contrast ratio but the image remains more accurate when viewed at an angle.
If someone comes across a different type of panel or if their Sony XBR-65X850E doesn't correspond to our review, let us know and we will update the review. Note that some tests such as the gray uniformity may vary between individual units.
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The Sony X900E is better than the X850E. The X900E is brighter than the X850E in SDR and HDR, and the 900E has a decent local dimming feature that can dim dark areas of the screen. The Sony X850E has better black uniformity, good for viewing in a dark room, and has a better black frame insertion feature that can improve motion at the cost of some brightness. The 75" X850E uses an IPS panel, which is better for a wide viewing area.
If you've got a bright room with wide seating, then the Sony X850F is a better choice due to its better viewing angles and better reflection handling. But for a dark room with seating directly in-front, the Sony X850E is better. The Sony X850F has marginally better input lag for video games and HDR gaming and is slightly better as a PC monitor. On the other hand, the Sony X850E has a much better contrast ratio and better black uniformity that make it a better choice for movies in a dark room.
The Sony X850E and the Samsung MU8000 have very similar performance. The Samsung MU8000 has better local dimming and can display deeper blacks when watching movies in a dark room, whereas blacks on the Sony X850E are marginally more uniform. The Samsung MU8000 is a bit better for gaming and HDR gaming as it has a bit better input lag even when sent HDR signal. On the other hand, the Sony X850E has somewhat better reflection handling that you'll appreciate if you watch TV shows in brighter rooms.
The Sony X850E is better than the Sony X690E. The Sony X850E has better HDR performance due to better color gamut and better color volume. It can get brighter both in HDR and in SDR and is more suitable for a brighter room. The Sony X850E has better reflection handling, smart features, and motion interpolation support, which is great for those who watch TV shows. On the other hand, the Sony X690E is more responsive as it has lower input lag that makes more suitable for playing video games.