LG OLED C4 vs LG QNED93A / QNED90A

The HDR performance of the LG OLED C4 is impressive, firmly placing it in the higher tier. Most films exceed 700 nits, delivering a highly realistic image. While none surpass the 1,000-nit mark, the combination of these results with the TV’s infinite contrast and perfect blacks significantly enhances the visual experience. The final scene, with a full-screen flash of sunlight, is slightly less bright than the others but still maintains a solid level of brightness. Another highlight is the excellent DCI-P3 colour gamut coverage, which ensures incredibly vibrant colours. The HDR technology in the LG OLED C4 delivers exceptional colour and detail reproduction. The dynamic tone mapping feature optimises brightness levels, ensuring ideal light reproduction in every scene, even in the most demanding high-dynamic films.

Although the number of local dimming zones in the LG QNED93A did not directly translate to a noticeably better contrast, one cannot deny that this model is brighter than its predecessor. In synthetic tests, we recorded values around 1400-1500 nits, and more importantly, these results are reflected in real movie scenes. In full-screen sequences flooded with white or bright lights, the screen was able to maintain high luminance, which produced a truly decent incredible HDR effect. Unfortunately, where the television could show its true class, namely in scenes that require precision, all the magic evaporates. The dimming algorithms we mentioned earlier are aggressive enough that small bright objects—such as distant lights, stars, or the moon—can almost completely disappear. Just look at the test scenes from the movie Pan or Sicario 2 (screens 2 and 4) to see how subtle details are dimmed to the brink of visibility. It's a shame, because a greater number of zones could theoretically lead to significantly better results. Fortunately, there are also stronger points. The QNED93A performs well in terms of color gamut coverage, achieving around 96% of the DCI-P3 standard. As a result, colors in movies look vivid and full, and the picture does not lose intensity even in more demanding scenes. So it can be said that the HDR in this model is solid, although the unfinished local dimming algorithms hinder its full potential.

The best factory mode on the tested television was "Filmmaker," which served as the basis for all evaluations. In terms of colour reproduction, this mode performed reasonably well; however, certain flaws significantly detracted from the overall viewing experience. The most fundamental issue was the white balance, which exhibited a noticeable dominance of red, skewing the image characteristics. This resulted in a pronounced yellow tint to whites and a general shift of all colours towards warmer tones.

The gamma, an equally crucial—if not more important—aspect, was notably lowered, leading to a marked reduction in contrast. Additionally, the television frequently lost detail at the start of the gamma curve. These issues were most apparent in SDR content.

When examining HDR materials, the same yellowing effect in the white balance was observed, as seen with SDR content. However, the EOTF curve, which replaces the gamma curve for HDR, was near perfect and left little room for criticism.

In movie mode (specifically Filmmaker), color reproduction on the QNED93A was relatively accurate, although it wasn't without critiques. In SDR content, white balance leaned towards warmer tones, resulting in a slight yellowing across the entire screen. Gamma, on the other hand, led to a slight brightening of the image, making it look a bit less natural, especially in scenes requiring precise shading (this is evident in the comparison picture). This isn't a problem that immediately stands out to every viewer, but more discerning individuals may feel that the picture deviates from the aesthetic intended by the filmmakers. In HDR materials, the situation looked somewhat different. The white balance presented itself quite well here, ensuring that whites didn't lean towards pink or unwanted shades of green. However, brightness management proved to be an issue. Analysis of the EOTF curve revealed that at certain moments the television can be noticeably too dark where it shouldn't be, losing some detail and reducing the realism of scenes. This detracted from the experience of HDR effects, which were theoretically supposed to be the most impressive. For this reason, we decided to carry out calibration.

As mentioned, LG televisions come with advanced tools to facilitate an accurate calibration process. By utilising these tools, we meticulously adjusted the image to align with the director’s original vision. Without overstating, the results were outstanding. Both SDR and HDR content now achieve a level of visual fidelity that reflects how films are intended to be seen.

Examining the colour accuracy on the "ColourChecker" palette reveals impressive results, with almost all colour errors falling below a delta of "1," aside from two minor exceptions. Post-calibration, the LG OLED C4 demonstrated a marked improvement in colour reproduction, particularly in SDR and HDR modes. Testing the TV after calibration highlighted its capacity for delivering exceptionally accurate colours, underlining the high calibre of this model. The LG C41LA offers a stunningly precise colour palette, sure to satisfy even the most discerning viewers.

After professional calibration, the Filmmaker mode on the QNED93A gained the most where it matters most in everyday use. It was possible to adjust the white balance and eliminate the yellowish tint in SDR content, which we watch most often – television, streaming services, or standard quality films. This makes colors look natural and pleasant, and the overall experience is much more comfortable. In HDR mode, we also made adjustments, but the biggest problem here turned out to be the EOTF curve. Although LG provides some leeway in the settings, the television still manages brightness on its own terms. It is evident that the local dimming algorithms are not entirely refined and can spoil the viewing experience by dimming parts of the image at inappropriate moments. Nonetheless, it is worth opting for calibration of this model, especially the mode intended for daily viewing.

Let us revisit the function responsible for smooth gradation and consider its role in improving lower-quality materials. The default smoothing of tonal transitions, while decent, can be further enhanced. The feature includes a slider for adjusting its strength, and we recommend selecting the first option. This setting strikes a balance, offering excellent results without compromising important details through unnecessary blurring.

The image scaling on the LG C4 is commendable, though not entirely without flaws. By default, the image appears slightly sharper, though not to an intrusive degree. While jagged edges on elements like trees are occasionally visible, this issue is relatively minor compared to similar offerings from other manufacturers.

LG QNED93A proves to be a very solid television for everyday use. Its image processor handles scaling excellently, ensuring that even older movies or terrestrial television gain sharpness and detail. During the screening of "The Godfather," it's clearly visible how upscaling pulls extra details from the image – the characters' faces and the texture of the clothing appear much clearer than in the original material.

The digital image processing also deserves praise. The television is equipped with a function for reducing unwanted color banding and screen irregularities. It works best in the "Medium" setting – subtly smoothing tonal transitions without over-interfering with the image. This way, the natural film grain is preserved, and the screen doesn't appear unnaturally smoothed. Perhaps in some scenes, you can still notice slight color banding, but in practice, the effect is more favorable than with a stronger intervention from the algorithm.

The LG G4 supports a maximum refresh rate of 144 Hz, achievable only when connected to a high-performance PC. Otherwise, the television operates at a maximum of 120 Hz, the recommended setting for viewing sports or content with fast-paced motion. For those prioritising smooth image quality, LG has included a versatile motion smoothing feature called "TrueMotion." This function is split into two adjustable sliders: De-Blur, which sharpens moving images, and De-Judder, which reduces jitter. Both sliders offer a range of settings from 0 to 10, enabling users to fine-tune the motion smoothness to their preference.

The LG OLED C4 boasts an impressive average response time of less than 1 millisecond, as confirmed by our measurements. This results in exceptional image clarity, far surpassing LCD televisions, which often have response times of several milliseconds. This clarity is evident in tests like the "UFO Test," where no trailing blur is visible behind moving objects.

LG QNED93A is equipped with a 144 Hz panel. This is primarily a nod to gamers, but the fact that higher refresh rates are increasingly making their way into televisions can be seen as a positive development. In everyday viewing, 120 Hz remains key, and in this regard, the QNED93A performs well. The manufacturer also provides the option to adjust the image through the TruMotion system – the De-Judder and De-Blur sliders allow you to choose between a cinematic motion character with visible frames and a fully smoothed theatrical motion.

The LG C4, like nearly all OLED televisions from the manufacturer, excels in its compatibility with consoles and PCs. With the inclusion of four full-bandwidth HDMI 2.1 ports supporting 48 Gbps, the TV incorporates a range of features to enhance the gaming experience. Notably, it offers simultaneous support for FreeSync and G-Sync, making it an ideal choice for gamers using AMD or Nvidia graphics cards. For those seeking the best possible gaming quality, the integration of HDR Dolby Vision and HGIG mode is particularly impressive. HDR Dolby Vision operates with remarkably low input lag across all settings, ensuring smooth and responsive gameplay.

A standout feature in LG's televisions is the GameBar, which allows users to adjust settings in real-time without leaving the game. This includes options for customising the image for viewers with visual impairments, a thoughtful addition. Additionally, enabling VRR (Variable Refresh Rate) does not result in a loss of contrast—a benefit of the OLED panel's self-emissive technology, eliminating the need for conventional backlighting. While some slight flickering of grey tones may occur, this is a characteristic of VRR technology across all manufacturers.

In summary: The LG C4, like the brand's other OLED models equipped with high-refresh-rate panels and HDMI 2.1, provides a seamless and immersive gaming experience. For gamers demanding top-tier performance, this TV is an outstanding choice.

LG QNED93A is a television that has undoubtedly been designed with gamers in mind. Right from the start, we get a complete package – all four HDMI ports operate at standard 2.1, so whether we connect a console, PC, or receiver, we can be sure of full compatibility. This is important because many manufacturers still limit themselves to two ports, and here nothing prevents all equipment from having maximum capabilities. There’s also an automatic game mode (ALLM), which switches the television to the appropriate settings when the console starts up, as well as variable refresh rate (VRR). This ensures that the image does not stutter or tear, even when the frame rate drops – whether in dynamic shooters or during races.

The 144 Hz panel gives an additional advantage in computer games. While 120 Hz is sufficient for consoles, in the case of PCs, the QNED93A allows for even more – every movement, every glance to the side is refreshed faster, which makes a difference especially in e-sports. The manufacturer also considered HDR in games – the television supports the HGiG mode, which provides guidelines to ensure that the lighting effects are exactly as intended by the game developers. For dessert, we get Game Bar – a special informational strip invoked on the screen that shows parameters in real-time. You can check the frame rate, active VRR functions, or input lag levels. This solution is useful not only for settings enthusiasts, but for anyone who wants to quickly verify what mode the television is operating in and whether everything is working as it should.