LG UR781 vs XIAOMI S Mini 2026 (55"-75") 60Hz

In HDR mode, LG UR781 unfortunately does not impress with its brightness. In tests on five screens, the television achieved only around 200 nits, which is quite a low value for HDR standards. This brightness is comparable to levels typical for SDR, which means that HDR effects are not sufficiently vivid, and the picture may look less impressive, especially in dynamic, bright scenes. In HDR mode, it has certain limitations in colour reproduction. This means that colours may not be as intense and rich as in televisions that handle a wider colour gamut better. In practice, this can make the image less vibrant and dynamic, and HDR effects may not be as spectacular as one might expect. Additionally, UR781 LG has some issues with accurate colour representation in HDR mode, which makes content look less lively.

When it comes to HDR, the Xiaomi S Mini 2026 performs really well, especially given the segment this model sits in. The TV can reach around 1000 nits of brightness without much difficulty, so in bright scenes it can deliver a very pronounced HDR effect. The sun, highlights or very brightly lit parts of the picture can be intensely bright and at times really hit you with their intensity. It’s a bit different in dark scenes, though. Very small light sources surrounded by black are rendered at much lower brightness, so they lack the pinpoint intensity seen on the best TVs. That’s not unusual for a Mini LED. The local dimming algorithm reduces the backlight in those cases to preserve as deep a black as possible, which in such scenes matters more than a few extra nits.

HDR colours

Colour reproduction also fares well. Xiaomi markets the S Mini 2026 as a QLED TV, although the solution used here is in practice based on a PFS phosphor. What matters is the result, and that is pretty good. Measured DCI-P3 gamut coverage was around 94%, while in the much wider BT.2020 colour space it was about 74%. That means the TV can show most of the colours used in HDR movies with suitably high saturation. Its limitations are most noticeable with very intense shades of green, where the colour range begins to run out.

Colour reproduction in LG UR781 in Filmmaker Mode, which although it is the best mode available from factory settings, is not without its flaws. First and foremost, the issue is with white balance, where the graph shows dips in the blue colour level. This phenomenon results in a shift towards yellow hues, making the image warmer than it should be. Such deviation means that the colours on the screen are not reproduced naturally, which may be particularly noticeable in scenes with white or neutral backgrounds. This can be confirmed by the Color Checker Test, which showed that some colours "escape" into other shades, indicating that the LG UR781 TV does not display colours accurately. This distortion can affect visual experiences, making film scenes seem less realistic and details may be displayed in incorrect colours, negatively impacting overall picture quality.

In terms of contrast, analysis of the gamma graph revealed drops to a level of 2.0, while the optimal value should be 2.4. This means that the TV may display darker parts of the image brighter in some scenes, reducing their depth and dynamism. Additionally, on the EOTF curve, which is responsible for brightness reproduction, an unnatural spike was noticed at the beginning. This phenomenon may result in excessive brightness boosting in the brightest parts of the image, leading to a loss of details in very bright scenes.

We tested the Xiaomi S Mini 2026 (55–75 inch models) in Film mode, which compared with the other presets offered the most accurate colours. That did not mean the image was correctly set up straight away. In our unit the white balance was noticeably shifted toward warmer tones. There was too little blue and too much red, giving whites and greys a slightly warm cast. The TV also tended to brighten darker parts of the image too much. This was due to the gamma, which instead of staying around 2.4 fell in places to about 2.0. That made shadow detail more visible, but the image lost some depth. So the factory settings weren't bad, but they still needed some adjustment to reproduce the picture accurately.

After calibration, colour reproduction in SDR content is quite good. The white balance has been effectively improved, resulting in natural, balanced hues across different scenes. The gamma has also been adjusted, providing a more precise representation of details in the shadows and bright areas of the image. As a result, the LG UR781 TV performs well in everyday use, offering solid colour quality and clear, well-balanced images in SDR mode.

However, the situation is less favourable for HDR content. The LG UR781 TV does not support a wide colour gamut, which limits the depth and richness of colours that HDR can provide. The EOTF curve deviates from the ideal, leading to excessive highlighting of details in the bright areas of the image. Unfortunately, this approach results in significant colour reproduction errors, as confirmed by tests on the Colour Checker. Additionally, the low brightness level of the panel further negatively impacts HDR image quality, causing the effects of dynamic range to not be fully realised and colours to appear washed out.

Despite some shortcomings in HDR mode, the TV has significantly improved after calibration, especially in SDR content. The enhancement of white balance and gamma has notably increased image quality, providing a more natural and cohesive colour reproduction. Compared to its pre-calibration state, the difference is clear, and the LG UR781 TV now offers better performance in everyday use, particularly in standard dynamic range.

Surprisingly, the Xiaomi S Mini 2026 responds quite well to calibration. After our adjustments we were able to noticeably improve the white balance and the picture stopped leaning toward overly warm tones. In SDR material the result is really good, with the TV able to reproduce such content very accurately and hard to fault for colour reproduction. We made similar adjustments in HDR, although not everything could be corrected there. Colours look better than on the factory settings, but the TV still tends to display the picture a little brighter than it should. You can see this from the EOTF curve, which sits above the reference. In practice this means some HDR scenes are brighter than the creators intended. It's a quirk of this TV and we can't do anything about it.

Let's now address the function of smoothing tonal transitions and its impact on overall picture quality. As illustrated by the photo on the left, this function performs exceptionally mediocre; we chose the "low" level, which does not enhance quality but also does not blur the film grain. There is a possibility to increase the strength of this function, which could soften this gradation, but one must consider that the image will be too softened in certain scenes.

On the other hand, regarding image scaling, the television does not perform outstandingly, which may be particularly noticeable with lower resolution content. The LG UR781 television applies a slight, artificial sharpening boost, making the image appear sharper; however, this mainly results from the application of artificial contours. For some users, this may be an advantage, as they prefer more vivid, pronounced details. However, this is a subjective matter—such an effect may not appeal to everyone, especially if they desire a more natural appearance of the image.

The MT5896 processor handles digital image processing in the Xiaomi S Mini 2026. Unfortunately, in this respect the TV is fairly average. Low-resolution content isn't upscaled very well, and its limitations become obvious on a large screen. The picture looks quite digital, and the TV can't pull out many extra details. You also can't turn off overscan for low-resolution content. The handling of posterisation smoothing is even worse. On the smaller models there's not even a separate setting to reduce the visible banding between similar shades. So if those imperfections are already present in the source material, Xiaomi effectively doesn't mask them.

The LG UR781 TV offers quite decent smoothness for movies, thanks to the "True Motion" option, which allows users to adjust the motion smoothing level on a scale from 0 to 10. Users can choose whether they want to maintain a more traditional, cinematic effect with a slight stutter (lower settings) or prefer a smoother image with a theatrical quality, which, although slightly deviating from the cinematic standard, may appeal to many.

In dynamic sports content and gaming, the LG UR781 TV performs worse. The TV has a 60Hz panel, which limits its interpolation capabilities to these values; therefore, smoothness can be improved in films, but motion blur cannot be reduced. Additionally, the lack of support for 120 Hz and BFI (Black Frame Insertion) technology means that fast-moving objects become blurred, and the panel's response time is too slow, negatively affecting clarity in fast scenes. As a result, the TV may not meet the expectations of gamers and sports fans who are counting on a smooth, clear image without motion blur.

The smaller variants of the Xiaomi S Mini 2026 use a 60 Hz panel, and that's their biggest limitation when it comes to motion. For films and TV series this isn't yet a major problem, because the TV has a classic motion interpolator for 24/30 fps material. So you can reduce the characteristic judder and adjust motion to your own preferences. Sports and other 50/60 Hz material fare worse, because there’s no additional feature to improve smoothness. In such content we’re therefore limited by the panel itself.

In terms of motion blur the TV performs fairly typically for a VA panel. The most trailing is visible behind objects moving against a dark background, while in brighter scenes the effect is noticeably smaller. It’s not at a level that completely ruins the perception of motion, but in dynamic scenes you can see that the panel isn’t one of the fastest.

When playing on a console, the LG UR781 TV offers several significant features that can affect the gaming experience, but it also has some limitations. On the plus side, it includes ALLM (Auto Low Latency Mode), which automatically optimises the picture settings by switching the LG UR781 TV to low latency mode, which is beneficial for gamers. The TV also supports correct implementation of HGiG, meaning HDR games look as intended by the creators.

Unfortunately, it lacks support for Variable Refresh Rate (VRR), which can result in worse gameplay smoothness, especially in more dynamic games. It also does not support Dolby Vision mode for gaming, which limits HDR picture quality in games using this format. The TV has a 60Hz panel, so it does not support higher frequencies at other resolutions, such as 1080p@120Hz, 1440p@120Hz, or 4K@120Hz, which is a significant downside for gamers expecting smoother gameplay at higher resolutions. There is also no support for G-Sync technology, which limits image synchronisation in games.

On the positive side, the presence of a Game Bar feature allows for quick access to settings for gamers and makes it easier to adjust picture parameters during gameplay.

In the larger sizes the Xiaomi S Mini 2026 becomes a far more interesting option for gamers. The panel runs natively at up to 144 Hz, so when you connect a PC you can use the high refresh rate even at 4K. At lower resolutions the TV can go even further, reaching up to 288 Hz. It also offers ALLM, automatic switching to Game Mode, and a Game Bar that keeps the most important settings within easy reach. Of course, the TV has two full-bandwidth HDMI 2.1 ports. So in terms of smoothness the difference compared with the 55–75 inch versions is substantial and particularly easy to notice when using a PC or console. However, not everything works perfectly. As with the smaller variants, we have reservations about the HGiG implementation. The HDR setup screens on the PS5 and Xbox don't precisely reflect the TV's actual capabilities, so if you set the console according to those prompts the brightest parts of the image can be blown out and lose some detail.