Sony X90L vs LG OLED B5

HDR on the Sony X90L TV looks promising. The luminance chart showed that the television has a solid power reserve, reaching a maximum of 1000 nits in synthetic tests. However, how does this perform in real-world scenarios? In scenes such as the opening of Life of Pi or the final sequence from The Meg, the TV is able to deliver this power on HDR content, reaching about 800 nits. Unfortunately, displaying small light elements on a black background, as seen in the scene from Sicario 2, poses greater challenges for the X90L – here the results drop to around 600 nits. Despite this, when compared to competing models with mini-LED technology, the effect looks very good and can shine just enough to impress us. Notably, the colour gamut coverage is commendable, with a score of 96% for DCI-P3 and 76% for BT.2020, indicating good colour reproduction in HDR content.

The LG B5 is a moderately bright OLED television. Regardless of the scene, it can generate around 500 nits of peak brightness. Interestingly, it achieves this even in full-screen shots saturated with white, where most OLEDs typically struggle. So is this screen suitable for HDR films? Indeed – and very much so, because such brightness allows you to truly feel the magic of HDR effects. However, it is worth noting that compared to last year's B4 model, the new B5 is darker – by about 100 nits. It may seem like a small amount, but at such average peak values, it makes quite a significant difference. Fortunately, the television compensates with another advantage – excellent coverage of the DCI-P3 and BT.2020 colour gamut. As a result, HDR films look really colourful, vibrant, and impress even in more demanding scenes.

The best mode in Sony televisions is the IMAX Enhanced mode. Although IMAX is mainly associated with the cinematic experience, here the colour reproduction out of the box is average. In the case of lower quality content, such as HD – regular television or YouTube – it is worth paying attention to the white balance. It is characterised by a deficiency in red and an excessive dominance of blue, which gives the image a pinkish hue. The brightness characteristic, or gamma, for HD content is quite decent, but a slight boost could make the image appear washed out and look as if it is behind a light fog.

In 4K HDR content, the situation looks somewhat different. The white balance shows a significant boost in blue, which causes the image to become unnaturally sharp and seem artificial. Such an exaggeration in colour reproduction may not appeal to everyone, especially if one prefers more realistic shades. Additionally, the EOTF curve in Sony X90L appears quite correct at first glance. However, at the end of the graph, some fluctuations can be seen, suggesting that the television is trying to maintain appropriate brightness to avoid overexposing larger elements.

We tested the B5 in Filmmaker mode and... we would love to see more TVs like this straight out of the box. Truly. The white balance is set very well – there's practically nothing to complain about. Well, if one were to nitpick, one might notice a slight deficiency in blue, which makes the overall image seem slightly yellowish. But that’s just our editorial quibbling. Most of you probably wouldn’t even notice it. We also have minimal reservations about brightness management in HDR format. The EOTF curve – which is responsible for how the TV distributes brightness in a scene – is slightly below ideal. In practice, it may happen that the darkest parts of the image are displayed too dark and simply… disappear. But these are details that only come out in measurements. Generally: we are impressed. However, we also know that LG TVs respond very well to professional calibration. You can achieve almost reference-quality picture from them, so – while it's already very good out of the box – we allowed ourselves to go a step further and refine everything to perfection.

Sony offers a range of tools for improving image quality, including two additional picture modes that we decided to utilise during testing and to apply calibration to. This solution significantly facilitates the calibration process and is very effective, provided the appropriate tools are available. In the case of HD content, the white balance was almost perfectly aligned – only one shade of grey exceeds the error value of "1", which is an excellent result. The same can be said for the brightness characteristic (gamma), which presents itself nearly perfectly, with microscopic deviations on the order of 0.01.

In the case of 4K HDR content, the situation is not quite so ideal. Although the white balance has been greatly improved, it has not been possible to completely eliminate the dominance of blue colour. Nevertheless, the errors on the Colour Checker test only occasionally exceed the value of "2", which means that image distortions are practically imperceptible. As for the EOTF curve, it is worth activating the filter in the top right corner "EOTF in Films" – the graph looks correct, but the television encounters difficulties when illuminating very small elements, which is due to the limited number of dimming zones. Despite these minor errors, it is thanks to the calibration that the IMAX Enhanced mode on the Sony X90L makes watching films feel like a true cinema experience.

We must admit that we didn't have much work with the LG B5. It's one of those televisions that look good right from the start, but after calibration… they can really impress. The white balance was brought to almost perfect levels – to the point of errors that are invisible to the human eye, unless you are a professional colourist with a magnifying glass at the screen. We also managed to master the tendency of the television to slightly dim the darkest details, particularly in HDR scenes. After proper tuning, everything looks cohesive: black remains deep but does not consume information. Highlights maintain their natural sparkle, and colours align with the director's vision. This is truly one of those models that shows you don't have to spend a fortune to have an almost reference-quality picture. If you can opt for professional calibration – it’s definitely worth it in the case of the B5.

The Sony X90L television features a tone transition smoothing function known as Soft Gradation, which is extremely effective. Even at the "low" option, the effects are satisfactory, but at the "medium" setting, it works like a dream – we recommend using this option for the best results. The image scaling on the Sony X90L is simply excellent. The image is not overly sharpened, which provides a natural effect and ensures that everything looks cohesive. It's clear that the engineers really focused on this aspect, creating a solution that is impressive and performs well in daily use. Because of this, even when watching content such as regular television or YouTube, where the image is not inherently stunning, one can enjoy a smooth, cohesive, and visually pleasing experience.

LG B5 really positively surprised us in terms of handling lower quality content. Thanks to the enhancement and smoothing features, materials in HD resolution or even SD gain a second life. Importantly – when this option is activated at the "low" or "medium" level, we do not feel that the image is artificially softened or smoothed out unnecessarily. Details remain intact, film grain does not disappear, and the edges of objects do not look washed out 😉. This is truly a useful tool – especially if you are watching terrestrial television, archival materials, or content from YouTube in lower resolutions. The image is clear, coherent, and simply pleasant to the eye.

Scaling as such works very well – even content of poor quality is reproduced with surprising fidelity. Unfortunately, there was a slight hiccup. Although the menu contains the option to disable overscan, the television still has issues with correctly displaying images of very low resolution. It may seem like a detail, but when watching older materials – it can be irritating.

Sony X90L with a 120 Hz panel is an excellent choice for both gamers and cinema enthusiasts. The television is equipped with the Motion Flow smoothing feature, which allows for adjusting motion fluidity using two sliders: "smoothness" and "clarity." The "smoothness" slider controls the level of fluidity in motion, which helps reduce image stuttering, while "clarity" is used to minimize blur and enhance motion sharpness, which is particularly useful in dynamic scenes.

LG B5 is a television with a 120 Hz OLED panel. It may not sound as impressive as the marketing claims of “144 Hz” or “165 Hz” found in gaming monitors, but honestly? The smoothness is excellent nonetheless. The picture is sharp, fluid and simply enjoyable to watch – even when there is a lot happening on screen. The organic panel does its job – the pixel response time is almost instantaneous, meaning there’s no sign of smearing or blurring that can spoil dynamic shots. Sport, fast-paced games – everything looks clear and distinct.

We also have the classic LG smoothness enhancer, TruMotion. This allows you to smooth out films shot at 24 frames per second – which, to put it bluntly, is most of what you watch on Netflix or from Blu-ray discs. If you set lower values on the “De-Judder” slider, you’ll get a picture closer to a cinematic look – with a slight judder, but without any artificiality. Higher settings? A soap opera effect is guaranteed. Fortunately, LG gives you the option to tune everything to your liking.

Sony X90L is a television that performs well in terms of compatibility with consoles and features for gamers. Its 120 Hz panel and two HDMI 2.1 ports with a bandwidth of 48 Gb/s allow for smooth playback of high-resolution games at a high frame rate. Gamers can also take advantage of the ALLM feature, which automatically switches the television to low latency mode, and VRR, which ensures smooth gameplay without image stuttering. The Game Bar is an additional advantage – an intuitive tool that provides quick access to the most important gaming settings and features, facilitating control over gameplay.

Unfortunately, when it comes to HDR in games, the Sony X90L has its limitations. There is a lack of support for HGiG, a standard that many gamers consider crucial for precise HDR reproduction in games. While the television supports Dolby Vision, which could theoretically improve image quality in games, the practical application of this feature is problematic. Dolby Vision in game mode is associated with very high input lag, making gameplay less comfortable and precise movements more difficult. Additionally, it is not possible to enable Dolby Vision alongside VRR. This means that despite its numerous advantages, gamers seeking the ideal HDR in games may feel a sense of disappointment.

There are already a few televisions on the market with the label “for gamers” that, in practice, don’t understand what that means. The LG B5 is not one of them. Everything here is spot on – there are four HDMI 2.1 ports, it has 120 Hz, VRR, and ALLM, and it even has a Game Bar that is actually useful, not just looks good in the brochure. You connect your console – it works. You set 4K at 120 Hz – it works. You have an Xbox and want to play in Dolby Vision – it works too. And this is not in the sense of “theoretically supports”; it really turns on, looks good, and you don’t need to fiddle with the settings for half an hour. Additionally, there’s the HGiG picture mode that LG implemented correctly – which means HDR in games doesn’t turn the screen into a flash lamp, but shows exactly what it should. There are no surprises here, no strange limitations, no “buts.” And you know what? That’s how it should be. Cheers to the LG B5!