LG OLED C4 vs Haier M90E

The results of HDR materials are definitely among the better ones. Practically every film significantly exceeds the 700 nits barrier, which allows for a very realistic image. Of course, none of them surpasses the magical thousand, however, the combination of such results along with unlimited contrast and black effectively boosts the visual outcome. The last of the scenes, featuring a fullscreen sun burst, is indeed less bright than the others, although it still represents a respectable level. It's also worth mentioning the excellent coverage of the DCI-P3 colour palette, which will enable the achievement of exceptionally vivid colours.

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 best factory mode implemented in the tested television was "Filmmaker". That was the one we used during all tests. This mode, in terms of colour reproduction, turned out to be quite decent, although other flaws effectively detracted from the enjoyment of the viewing experience. Starting with the most basic one, which is white balance, it was easy to notice that this was marked by a dominance of red, which completely altered the characteristics of the picture. We could see a strong yellowing of the whites and a shift of all colours to warmer tones. The gamma, which is a graph as equally important, if not more so, was quite severely reduced, resulting in a significant drop in contrast, except for the start of the graph, where the television insidiously lost details. That’s all regarding SDR materials. Looking closely at films with a wide dynamic range, we can observe exactly the same phenomenon of white balance yellowing as in films with a standard colour palette. The EOTF curve, which replaces the gamma chart for us, is practically perfect and cannot be faulted.

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.

As we mentioned earlier, LG televisions are equipped with advanced tools for carrying out the calibration process. We used them to model the picture in line with what the director envisioned. And without modesty, we must admit that we achieved this phenomenally. Both SDR and HDR materials present a level that clearly indicates this is how a film should look. It's worth taking a look at the colour errors on the "ColorChecker" palette, where practically none of them exceed "1", except for two samples.

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.

Once again, we will take a look at the feature responsible for gentle gradation, but we will also address the one that aims to enhance the quality of lower-quality materials. The default smoothing of tonal transitions, as we could see, was not the worst, but it can be improved further. The function has a slider that allows us to adjust its intensity. We recommend using the former, as it produces very good results and does not blur important details.

Image scaling on LG C4 is quite good, however, it cannot be said to be without flaws. The image is slightly sharper by default, although not in a very noticeable way. While jagged edges of trees can be seen, it is not a major issue when compared to other manufacturers.

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.

The maximum refresh rate we can set on the LG G4 is 144 Hz. Naturally, this is only possible when connecting the TV to a very powerful PC. Otherwise, we will operate at a maximum refresh rate of 120 Hz, which is recommended if we primarily want to watch sports or content with a lot of motion dynamics. For those who require high fluidity of the image, the manufacturer has implemented a multi-level motion smoother called "TrueMotion". It has been divided into two separate sliders that adjust the sharpness of moving images (De-Blur) and judder (De-Judder). Both sliders can be set in the range of 0 to 10, with each degree affecting the level of smoothing, allowing everyone to find their sweet spot.

The panel of the LG OLED C4 features an average response time of less than 1 ms (which directly results from our measurements), enabling the achievement of an extremely clear image, unattainable for LCD TVs, which can have response times of up to several milliseconds. This is clearly evident in the images from the "UFO Test," which show no trailing blur behind the object.

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.

We can now say that LG C4, like practically every OLED television from the manufacturer, is exceptionally good in terms of cooperation with consoles and PCs. Thanks to the implementation of four full-bandwidth HDMI 2.1 ports at 48 Gbps, the manufacturer has embedded all the features that enhance gaming comfort, including simultaneous support for FreeSync and G-Sync technologies. With such a tandem, players with graphics cards from AMD or nVidia can safely choose C4. However, what should please gamers demanding the highest possible quality the most is the simultaneous implementation of HDR Dolby Vision and HGIG mode. The former is particularly important as it operates with extremely low input lag in all settings.

A standard feature in televisions from the Korean manufacturer is also the implementation of GameBar, allowing for quick adjustments of settings "on the fly," without the need to exit the game. It also allows for image adjustments for people with visual impairments, which is an incredibly nice touch. Another important piece of information is that when VRR technology is enabled, we won’t experience a drop in contrast. This is, of course, due to the design of the panel and the absence of conventional backlighting. It is, however, normal for shades of grey to flicker slightly, although this is a characteristic feature of this function regardless of the manufacturer and television.

In summary: LG C4, just like all the manufacturer's OLEDs equipped with high-refresh-rate panels and HDMI 2.1 connections, creates a harmonious whole with consoles. In practice, it is a complete television, and if we expect the highest possible efficiency in gaming, C4 will be an ideal choice.

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.