Haier M90E vs LG OLED C6 (WOLED)

Haier M90E is a television that doesn’t lack brightness. In most film scenes, peak luminance exceeds 1000 nits, which gives the image a distinct "punch" and high dynamics. This performs really well with typical bright HDR material. However, one must take into account the previously mentioned dimming algorithm. In scenes that are not evenly flooded with light – for example, when displaying individual stars on a black sky – the high brightness highlights the shortcomings of zone control. Instead of a precise light point, we often see a distinct halo effect around bright objects. Despite these drawbacks, the overall presentation of the image can be pleasing, thanks in large part to the colour reproduction. The manufacturer has applied a PFS phosphor coating, which allows for wide coverage of the colour palette. In our measurements, the coverage of the DCI-P3 space reached a solid 95%.

The HDR performance of the LG C6 is really very good. LG Display’s new WOLED panel has mainly brought a significant increase in brightness. In our unit we measured around 1500 nits and, importantly, the TV can show similar values in many normal movie scenes as well. That gives HDR real punch. Bright highlights, lamps and sunlight can be genuinely intense, and most HDR movies simply look very impressive. Of course it’s still an OLED, so brightness falls in scenes with a lot of white. The fifth scene from the movie The Meg illustrates this well, where the C6 reached around 600 to 700 nits. That’s still a very good result, but it also shows the new panel hasn’t shed all the limitations typical of OLEDs.

Colours

When it comes to colours, it’s also hard to raise major objections. The C6 covers about 99% of the DCI-P3 gamut and roughly 75% of BT.2020. In practice colours are very saturated and, importantly, stable regardless of the scene. That’s worth emphasising, because not every TV behaves the same in this respect. In some RGB Mini LED models colour saturation can depend more strongly on image brightness. A wider colour gamut today is mainly offered by QD-OLED TVs and new SQD models with a new generation of quantum dots. However, the C6 still performs very strongly here and is able to produce suitably saturated colours in most movie scenes.

For the measurements, we chose the Film mode, which is supposed to provide an image closest to the intentions of the creators. Unfortunately, in the case of the M90E, its characteristics – besides the reduced brightness – differ little from the Dynamic mode. In both SDR and HDR materials, the image is noticeably tinged with a cool blue hue. The white balance is heavily skewed towards blue, reminiscent of typical, aggressive "store" settings. This results in unnatural skin tone reproduction and makes the image tiring to the eyes during longer viewing sessions. The way brightness is managed also negatively impacts colour fidelity. The TV struggles to maintain proper levels – small details are often too dim, while larger, bright areas of the image become overexposed. These deviations in the brightness curve, combined with the cool white balance, lead to very large colour reproduction errors (DeltaE) in the factory settings.

Right out of the box the LG C6 is quite well set up, especially if you choose the Filmmaker mode. In SDR material the white balance is decent, although as brightness increases there is a slight lack of red. The image becomes a bit cooler, but not enough for it to be very noticeable during normal viewing. More is happening in the brightness characteristic. Gamma is a little low and instead of holding at 2.4, for a large part of the range it sits closer to 2.1–2.2. In practice the C6 slightly brightens midtones. Shadows are therefore more readable, but the image loses some depth compared with how it should look in a darkened room.

In HDR the situation is a bit more interesting. The start of the greyscale looks very good, but from about 20–30% brightness the white balance starts to drift increasingly. As brightness rises there is more red and a noticeable lack of blue. In the brightest sections the difference is already significant and also affects the reproduction of some colours. The EOTF curve itself is followed quite well through most of the range. The C6 only tends to slightly brighten the image, which we also saw in our film comparisons. The largest deviation appears around the brightest parts, where the TV starts adapting the signal to the panel's capabilities.

The factory Filmmaker setting in HDR is therefore not perfect, but overall performs well. The biggest area for improvement is the white balance, especially at high brightness.

Haier M90E clearly improves after undergoing professional calibration, especially for SDR content. The television's menu offers a sufficient number of tools to effectively correct factory errors. We managed to "tame" the white balance and eliminate the dominant blue glow. We also adjusted, albeit to a lesser extent, the gamma curve, which allowed us to recover some details in the shadows that were too heavily dimmed in the factory settings. The final effect in SDR is a significantly more natural and pleasing image. In HDR mode, the success is only partial. While we managed to improve the white balance here too, color reproduction errors (Color Checker) remained at a high level. Analysis of the EOTF curve (responsible for brightness in HDR) points to the cause of the problem: the television imposes its own interpretation of the signal and does not provide tools to modify this curve. The source of high errors is not the calibration itself, but the specificity of the device – aggressive and imprecise zone dimming interferes with measurements and is "stiffly" embedded in the characteristics of this model.

LG TVs have long responded very well to calibration, and the C6 is no exception. After adjustments we managed to set the white balance practically perfectly, and most colour errors fell below 3, often down to around 2. In practice this means very accurate colour reproduction in both SDR and HDR. An interesting detail only appeared with the HDR brightness response. On a classic EOTF chart everything looks almost perfect and at first glance it would be hard to find fault. Only when we measured the TV’s behaviour using filters based on real film scenes did it become clear that the C6 has a slight tendency to artificially boost image brightness.

It’s not a huge difference and many viewers may even see it as a positive, because HDR looks a bit more striking as a result. From the point of view of fidelity to the source material, however, it’s not ideal — some scenes are simply a touch brighter than the filmmaker intended. Interestingly, this is rather unusual for LG. In previous generations the brand’s TVs typically held very closely to the reference picture curve after calibration. The C6 is still very close to the standard, but that subtle brightness 'boost' can indeed be noticed in films and TV series.

The evaluation of the image processor must be divided into two distinct aspects, as the Haier M90E behaves inconsistently here. The first issue is the upscaling itself, which is the process of scaling lower resolution content to 4K. In this task, the television performs quite decently. The algorithms effectively enhance detail, making the final image relatively sharp, clear, and readable. In this respect, it’s hard to have major complaints about the device.

The situation is completely different with materials that have a high degree of compression, which we encounter in older recordings or on platforms like YouTube with a lower bitrate. Here, the processor struggles with smoothing tonal transitions and masking the imperfections of the source. The television fails to hide compression blocks, resulting in a very harsh, "digital" character of the image. The lack of effective artifact reduction can certainly deter viewers from watching lower quality content on this screen.

Here the LG C6 has taken a really big step forward. The TV uses the same processor found in the flagship G6, and in terms of image processing the two models are very close. That's a big plus, because in this area LG's processor this year performs excellently. The "Smooth Gradation" function works particularly well. With heavily compressed material it can effectively hide ugly tonal banding and artefacts that often appear, for example, in lower-quality streaming. It's best to leave it on the "Low" setting. Then the improvement is clear, and the TV doesn't yet start blurring fine detail. Higher levels smooth the image more aggressively, but can already remove some of the natural texture of objects on screen. Upscaling itself also performs very well. Lower-resolution content is properly sharpened, edges look clean, and the processor quite effectively reconstructs fine details. In that respect the C6 is really close to LG's best TVs and the differences compared with the G6 are small.

Haier M90E is equipped with a simple yet functional motion smoothing system (MEMC). In the settings menu, users will find a three-level adjustment scale: low, medium, and high. This allows for adjusting the level of intervention in the image to personal preferences – from gentle smoothing of 24p films to maximum fluidity (soap opera effect). The system operates stably and fulfills its purpose in typical applications.

The LG C6 features a panel with a maximum refresh rate of 165 Hz, which is great news especially for gamers using a powerful PC. For movies, sport and consoles we’ll of course be limited to 120 Hz at most, but even then it’s hard to fault the motion clarity. As you’d expect from an OLED, the panel’s response time is near-instant. Moving objects therefore don’t leave the characteristic smearing you still see on LCD TVs. This is especially noticeable in sport and fast-paced games, where the picture remains very clean even during dynamic movement.

For movies and TV, LG has also included a motion smoothing system called TruMotion. In the user settings you’ll find two separate sliders. De-Judder is primarily for low-frame-rate material, namely movies and TV series at 24 fps. You can use it to slightly reduce the characteristic judder or increase it if you prefer a much smoother picture. De-Blur, on the other hand, is useful for higher-frame-rate content, mainly sports broadcasts and 50/60 fps TV.

From a hardware perspective, the Haier M90E is a solid offering. The television is equipped with two full-bandwidth HDMI 2.1 ports, which ensure support for key technologies: VRR (variable refresh rate) and ALLM (auto low latency mode). Another plus is the correct implementation of Dolby Vision for gaming, which maintains a relatively low input lag. Problems arise with the software configuration. The biggest drawback is the forced, continuous dynamic tone mapping by the television's processor. This prevents proper HDR calibration from the console using system panels (HGiG) – the television ignores source settings and processes the image in its own way. We also noted deficiencies in the interface: the M90E does not have a typical "Game Bar" (overlay with parameters), which is standard among competitors. Cooperation with Xbox consoles has also proven problematic with atypical parameters – the device struggles to properly display 1440p resolution at 120 Hz refresh rate. Despite the aforementioned software shortcomings, the Haier M90E remains a very attractive screen for gamers. The final reception is saved by a solid hardware foundation. Native refresh rate of 144 Hz and the presence of full-featured HDMI 2.1 ports are advantages that are crucial in everyday use. If we are looking for a television that provides high fluency and supports 4K signal, this model will do its job.

LG has long focused heavily on gamers, and the C6 essentially lacks nothing important. The TV supports 4K at 120 Hz from consoles, and when connected to a PC it can even run at 165 Hz. On top of that there’s VRR from 40 to 165 Hz, ALLM and a properly functioning HGiG. Another big plus is support for Dolby Vision in games, so the Xbox Series X can use that format without giving up game mode. The package is rounded out by the Game Bar, which lets you quickly check key signal parameters and change settings without leaving your game. In terms of features alone, the C6 is one of those TVs it’s really hard to fault. Whether you play on PlayStation, Xbox or PC, practically everything you could expect from a modern gaming TV is available here.