LG UT8100 (IPS) vs Hisense U7S Pro

The LG UT8100 television unfortunately does not meet expectations in the HDR effect category. A peak brightness of only 300 nits on the luminance chart is well below the required value to fully enjoy HDR effects. In practice, the image resembles SDR quality more than true HDR, which is particularly evident in demanding high-contrast scenes. The coverage of the DCI-P3 colour palette is only 82%, which further limits the ability to present vibrant and rich colours. Instead of impressive visual experiences, we receive a muted and washed-out image. For those looking for a television to fully utilise HDR content, the LG UT8100 model turns out to be quite disappointing.

Let's start with the fact that the U7S Pro is an impressively bright TV. In calibrated mode our test equipment recorded a staggering 2200 nits of peak brightness. That's an excellent result, especially given that this model is positioned more as a mid-range set.

As we know, peak brightness on test patterns is one thing, and real film scenes are another. Unfortunately, in real-world footage the backlight output drops noticeably. In the most demanding moments the TV can still exceed 1000 nits, which is still a great result and sits well within the HDR mastering standards for most films, but the real challenge comes from aggressively tuned local dimming algorithms. Because of them, small bright details, like stars or the moon in a night sky, are noticeably dimmed. The TV seems determined to preserve deep blacks, which is understandable, but sadly this comes at the expense of dynamic range and the overall HDR punch.

Colour reproduction is worth praising. The new U7S Pro is a QLED design that provides very wide colour gamut coverage. Unlike last year's model (U7Q Pro), this year's variant is a genuine QLED rather than a solution based on a PFS filter. As a result, colour saturation has clearly increased, and coverage of the demanding BT.2020 colour space has exceeded 81%.

The Filmmaker Mode on LG UT8100, while theoretically the best for watching movies, has significant issues. The biggest problem is the white balance – drops in blue cause a noticeable yellowing of the image, visible in both HD and 4K content. These issues are confirmed by measurement results in the Colour Checker test, which indicate significant deviations in colour reproduction.

In terms of brightness characteristics, both HD and 4K content exhibit a large tonal boost. The gamma curve in both cases remains well below the reference value of 2.4, which leads to excessive brightening of darker elements of the image. A similar problem is evident in the EOTF curve – in the case of 4K content, the TV struggles to manage brightness correctly, resulting in issues with screen brightness. This means the factory settings of this model require significant adjustment to achieve better picture quality.

We tested the U7S Pro, as we always do, in the best factory-tuned picture mode, Filmmaker Mode. The displayed colours can be judged in two ways. The most disappointing was the profile intended for SDR viewing, i.e. classic TV, YouTube and other less demanding content. The image there had a distinct yellow cast, which proved to be a direct result of an incorrectly set white balance. As our charts show, this involved a huge deficiency of the blue component, which drastically affected the overall colour temperature. You can see this clearly on the ColorChecker charts and on the colour palette graphs themselves, where most samples drifted towards yellow. Fortunately, the factory HDR mode performed much better; there the colour errors hovered around a Delta E of 3, which is a really solid result.

After calibrating the Filmmaker Mode, the gamma has been aligned to practically perfect, reference values, which has significantly improved the overall tonal characteristics in HD content. 4K HDR content also looks better, although some issues are still visible at the extreme ends of the graph, where the curve deviates from the ideal. The EOTF curve performs worse since the TV struggles to maintain the correct brightness values. As a result, the image in some scenes may be too bright or slightly dim, which stems from the device’s design. Nevertheless, the calibration brought significant improvement, particularly for HD content, where the tonal balance and colour reproduction are now at a much higher level.

We do know, however, that the company Hisense is capable of much more – as previous generations have proven – which is why we simply couldn’t leave the factory flaws of the U7S Pro model unaddressed in everyday content. As always in such cases, we had the television undergo professional calibration. The conclusions? This process brought about a colossal change. After manually adjusting the white balance and compensating for deficiencies in the blue component, the annoying yellow tint disappeared as if by magic. White became naturally clean, and skin tones gained the proper, healthy hue. Importantly, the calibration not only tamed the capricious SDR mode but also maximised the potential of the panel, reducing average colour reproduction errors to values nearly imperceptible to the human eye. The only thing we need to criticise after the whole process is the very nature of the Mini-LED backlighting and its specific interaction with the HDR signal. The aggressively tuned local dimming algorithms significantly interfere with the EOTF brightness curve. As a result, the backlighting doesn’t always work perfectly with the creator’s intent – depending on the scene being watched, the curve can noticeably run either above or below the reference, occasionally disrupting the ideal dynamic of HDR images.

The fluidity of tonal transitions is also correct, although the effect depends on the settings. The update improved the operation of the smooth gradation function, smoothing transitions better than before, but introduced minor issues with detail loss, e.g. on textures.

Image scaling on LG UT8100 performs very well. The image presents itself decently, with no major issues regarding edge aliasing. Details are preserved at a satisfactory level, making materials of lower resolution look really solid on this television. As a result, users can enjoy watching older content without any noticeable defects in quality.

The digital processing of lower-quality signals is at a very high level here, and that's all thanks to the MediaTek Pentonic 800 processor used in the U7S Pro. The upscaling itself also performs well, meaning the TV's ability to upscale lower-resolution signals to 4K is impressive. We didn't notice any unnatural, overly sharp contours on the screen, and our test image of the model simply looked attractive.

LG UT8100, equipped with a 60 Hz panel, is particularly suited for those watching movies. The television offers the TruMotion system with a de-judder effect adjustment, which allows users to tailor the smoothness of the picture – from more choppy to exceptionally smooth, resembling a soap opera effect, depending on user preferences.

The Hisense U7S Pro uses a panel with a maximum refresh rate of 165 Hz at 4K, and in gaming mode it can even hit 330 Hz at Full HD. However, it's worth remembering that these top figures don't mean much in everyday use, because most content still runs at a maximum of 120 Hz (for example when playing on a console). Even so, the TV handles motion quite well and performs respectably for an LCD design.

There isn't much to fault when it comes to smoothness. In the menu you'll find a motion smoothing feature called "Motion Enhancement", which hides two sliders: blur reduction and judder reduction. They let you manually tune the smoothing, which works well for both films and sport, effectively improving the raw TV signal.

LG UT8100 offers basic features for gamers, such as ALLM and Game Bar, which makes it easier to access settings. The TV also supports HGiG, improving picture quality in HDR games. Unfortunately, the lack of support for Dolby Vision and VRR limits the device's capabilities, as does the 60 Hz panel, which excludes support for 120 Hz resolution. This model is more suited for less demanding gaming applications.

If you're planning to connect a console or PC to the U7S Pro, you'll be more than pleased – this TV is great gear for gamers. Hisense hasn't held back, featuring 4 HDMI 2.1 ports with full bandwidth of 48 Gbps. So you don't have to juggle cables, as each port will handle the full suite of features. We have an automatic game mode (ALLM) and VRR, which operates over a wide range from 48 Hz to a whopping 330 Hz. Of course, that 330 Hz is currently just a gimmick for owners of powerful PCs, as consoles will cap at 120 Hz, but it's good to have that headroom for the future. The Game Bar also works really well when gaming. It's a handy menu bar for gamers, where you can quickly change the picture mode, turn on a crosshair in the middle of the screen, and even switch the display aspect ratio to ultra-wide, which PC simulation fans will appreciate. The only downside worth noting is the incorrect implementation of the HGiG format in games. The issue is that the TV ignores instructions from the console regarding the image generated in HDR10 and constantly butts in, trying to "enhance" the image in its own way. This makes proper HDR configuration in the console menu (where brightness is set on the logo/checkerboard) a bit more challenging.