The LG UM8070 is a good 4k TV with decent picture quality. It has a VA panel with a very good contrast ratio, but no local dimming support. It can get decently bright in SDR and can handle the reflections of a bright room well. Unfortunately, the TV lacks a wide color gamut and has poor HDR peak brightness, so it can't deliver HDR content as it should. The gray uniformity is decent, but the viewing angles are poor, typical of a VA panel. Motion handling is great thanks to the very fast response time and the great motion interpolation features, but the TV doesn't support any of the more advanced features like BFI or FreeSync. The input lag is very low, which is great news for gamers.
The 86" model (86UM8070PUA) has an IPS panel, so we expect it to have wider viewing angles at the expense of a worse dark room performance.
This is a good TV for mixed usage. It can handle reflections well, but it's more suitable for an average-lit room as it can't get very bright. It has an extremely fast response time that delivers crisp motion and a very low input lag that makes it very responsive. Unfortunately, it doesn't have a wide color gamut, so HDR isn't that great. Finally, it's only available in two variants. The 82" one has a VA panel and better dark room performance, and the 86" one has an IPS panel and we expect wider viewing angles at the expense of lower contrast ratio.
This is a decent TV for watching movies. The 82" model has a great contrast ratio and very good black uniformity and thus can deliver deep blacks which enhance picture quality. We expect the 86" model with the IPS panel to have worse dark room performance. and thus a lower score in the 'Movies' category. Neither model supports local dimming to improve blacks. This TV has decent gray uniformity, can interpolate motion up to 120 fps for the soap opera effect fans, and can remove 24p judder from any source.
This is a good TV for watching TV shows. It can handle reflections well and, although it can't get very bright, you should have no issues placing it in a room with a few light sources. It upscales content well from cable boxes or native apps, and has decent gray uniformity. Unfortunately, the 82" model with the VA panel has poor viewing angles and the image degrades when you watch from the side. If you enjoy watching TV shows while doing chores, then consider the 86" model since the IPS panel will allow you to experience better picture quality when you aren't sitting straight in front.
This is a decent TV for watching sports. It can handle reflections well, although it's more suitable for a not-too-bright room. It has an excellent response time so fast-moving content like sports looks crisp with minimal blur. Unfortunately, the decent gray uniformity might disappoint some hockey fans, as the rink might display with some darker spots. The 82" model isn't great if you plan to watch a game with friends as the viewing angles are poor. If this is something that concerns you, then the 86" model might be a better choice since it has an IPS panel with better viewing angles.
This is an excellent TV for playing video games. It has a very low input lag and the TV reacts immediately to your actions. Fast-moving video games look crisp thanks to the extremely fast response time, and upscaling from older consoles is good without any issues. Unfortunately, the TV doesn't support any of the advanced gaming features, but it does offer an auto low latency option.
This is a decent TV for watching HDR movies. It has a great contrast ratio and good black uniformity that improves blacks in a dark room where HDR is meant to be watched. Unfortunately, it can't get very bright in HDR and doesn't have a wide color gamut, so it can't deliver HDR content the way its creator intended. We expect that the 86" model will have an even worse contrast ratio and worse black uniformity, so 'HDR Movies' performance should be worse for this model.
Playing HDR games on this TV is great. This is due mainly to the very low input lag and the extremely fast response time. It doesn't have a wide color gamut, can't get very bright in HDR, and can't display HDR content as it should be. Furthermore, we expect the 86" model to have worse performance in HDR due to the IPS panel that can't deliver a high contrast ratio.
This is a very good TV for use as a PC monitor. It has a low input lag, is very responsive, and the image is crisp thanks to the fast response time. It can display proper chroma 4:4:4, so text looks clear, and it has no risk for permanent burn-in if you show static images like OS menus. If you are considering using it as a PC monitor for presentations, the 86" model might be a better choice since it has an IPS panel and offers wider viewing angles at the expense of a lower contrast ratio.
The overall design of the LG UM8070 is decent. It has a simple stand that supports the TV well but can't prevent all wobble. The TV has a metal back that looks very plain, and the borders of the screen are slightly thick but aren't annoying. It's a little thicker than most TVs, but given its size it's hard to notice. The TV is heavy, but has a solid build that should give you no issues.
The stand supports the TV well, but due to the TV's size, it can't prevent wobbling completely. Unfortunately, the stand is nearly the full width of the TV, so you'll need a really large table unless you wall-mount it.
Footprint of the 82" model: 65.2" x 13.8".
The back of the TV is very plain and made of metal. The power cable can't be removed. Also, some of the connectors are facing outwards and can get in the way if you plan to wall-mount it flush to the wall. There is no provision for cable management.
Considering the size of this TV, the thickness isn't an issue. It will, however, stick out if you wall-mount it.
The LG UM8070 has a decent build quality. It's very sturdy and quite heavy due to its metal back. We don't expect you to have any issues with this TV's build quality.
The contrast ratio of this TV is great, although not as good as other VA panel TVs like the recently reviewed Hisense H8F. Nonetheless, blacks look good in a dark room, even though there is no local dimming feature to further improve their appearance.
We expect the 86" version of this TV (the 86UM8070) to have a worse contrast ratio due to its IPS panel.
Unfortunately, this TV doesn't have a local dimming feature. The above video is for reference only.
The UM8070 has decent SDR peak brightness, which is okay for most decently-lit rooms. It's not as bright as the UM7300, but more closely resembles last year's UK7700. Like many LG TVs, there is very little variation in brightness with different content, and this is great.
We measured the peak brightness after calibration with the 'ISF Expert (Dark Room)' Picture Mode, Gamma set to '2.2' and Color Temperature set to 'Warm 2', as these settings are the most accurate. Different picture modes and color temperatures can produce slightly different results.
If image accuracy isn't as important to you, the 'Vivid' Picture Mode delivers a slightly brighter image, reaching a peak of 366 cd/m² with a 10% window.
We measured the HDR peak brightness with the 'HDR Cinema' Picture Mode and Color Temperature set to 'Warm 2' before calibration. Different picture modes and color temperatures can produce slightly different results.
If image accuracy isn't as important to you, the 'Vivid HDR' Picture Mode can produce a slightly brighter image with a peak of about 363 cd/m² with a 10% window.
The gray uniformity of the LG UM8070 is decent. Some clouding is visible, especially in the brighter scenes, and this might bother some demanding sports fans. In darker scenes, it's harder to notice.
The viewing angles of this TV are poor, as expected from a VA panel. Blacks rise quickly and gamma and colors shift at relatively small angles off-center, making the image look inaccurate and washed out.
The 86UM8070PUA has an IPS panel, and we expect it to have better viewing angles at the expense of worse dark room performance. Although IPS panel TVs usually have better viewing angles than VA panel TVs, they still can't reach the viewing angle performance of OLEDs like the LG C9. If viewing angles are a concern and you can afford the extra cost, make sure you check out our Best OLED TV recommendations.
This TV has impressive black uniformity. We expect that the IPS 86UM8070PUA won't be as good.
Good pre-calibration color accuracy for the UM8070. Some inaccuracies are visible in the grays and colors, but nothing major. The color temperature is slightly warm and the gamma doesn't follow the target very well. This results in some bright scenes appearing slightly over-brightened, whereas some really dark scenes appear even darker.
After calibration, the UM8070 has excellent accuracy as most of the inaccuracies disappear and those remaining are hard to spot. The gamma follows the target well, and the color temperature is spot on the 6500K target.
You can see our recommended settings here.
Older 480p content, like DVDs, looks very good, with no obvious issues or upscaling artifacts. However, the size of the TV is not optimal for watching 480p content up close. It will look fine if you sit at the right distance.
720p content, like many cable TV stations, looks great, with no obvious issues.
1080p content, like Blu-rays or older consoles, looks just as good as native 4k content.
The LG UM8070PUA has a decent color gamut, but lacks a wide color gamut. The 'Expert (Dark Room)' EOTF (above) follows the target PQ curve well (although some dark scenes do appear slightly crushed) until it rolls off near the TV's peak brightness. The Game mode EOTF is almost identical.
If you find HDR too dim, setting Dynamic Tone Mapping to 'On' and Dynamic Contrast to 'High' increases the brightness of bright scenes, and helps reduce the crush in the very dark scenes. See our full recommendations here.
Mediocre color volume on this TV. Unfortunately, it can't produce very bright colors. These results are better than UK6300 and the UM7300, but these TVs have IPS panels and can't deliver saturated dark colors due to their low contrast ratio. This might also be the case with the 86UM8070PUA, which has an IPS panel, but we can't be sure as we haven't tested it.
Excellent gradient performance overall, but on our test pattern, there is some noticeable banding in almost all areas. In normal content, this is not as obvious. If banding bothers you, the Smooth Gradation feature can remove banding in normal content, but can also cause a loss of some fine details in some scenes.
There is a very faint temporary image retention that you can see in our test image. However, this is not noticeable in normal content and just like the LG C9, our software doesn't detect it.
We don't expect VA panels to experience permanent image retention, as the VA panel in our long-term test appears immune.
The UM8070 has a remarkable response time. The transition from one image to the next is almost instantaneous and without overshoot. This leads to very crisp motion with minimal blur. This measurement is among the best of the LED TVs we've tested and is at par with the Vizio P Series Quantum X 2019.
The UM8070 uses PWM flicker to dim the backlight. The flicker frequency is 120Hz and the flicker is always on, even at maximum Backlight. This causes noticeable duplications, as seen in our Motion Blur photo.
The UM8070 has excellent motion interpolation features. It can interpolate content up to 120 fps if you set both the 'De-Judder' and the 'De-Blur' sliders to max. However, just like many TVs, when you interpolate fast action or low fps content to 120 fps you'll notice some distracting artifacts, so use caution.
To find out more about motion interpolation, and how to enable it on this TV, see here.
The UM8070 has a very fast response time. Since the transition from one movie frame to the next is extremely fast, each frame is held on the screen for a longer time and thus motion appears to stutter. This is more noticeable in wide-panning shots, and you can minimize it by enabling motion interpolation.
The UM8070 can remove judder from any source as long as Real Cinema is set to 'On'. However, at 60i signals (like some cable boxes), you have to take the extra step of enabling Trumotion and setting both sliders to '0', as also explained here
The LG UM8070 has a 120Hz refresh rate, but it doesn't support any of the variable refresh rate technologies, like FreeSync or HDMI-Forum's VRR.