TCL P755 vs LG QNED87T6B

TCL P755 provides average HDR effect quality. The maximum brightness of the TV is slightly below 300 nits. Such brightness limits the intensity of bright areas in HDR content. In practice, this means that bright elements may not be sufficiently pronounced, affecting the overall impression of contrast. However, the TV offers wide coverage of the DCI P3 colour gamut, reaching about 93%. As a result, colours are vibrant and saturated, significantly improving colour reproduction quality in HDR content. Despite the limited brightness, the wide colour range allows for richer and more realistic shades.

LG QNED87T6B delivers truly decent visual experiences when it comes to HDR. During our tests on test patterns, the television achieved brightness close to 500 nits, which is a satisfactory result and allows for good visibility of details in high dynamic range scenes. Support for basic HDR formats such as HDR10 and HLG ensures proper image quality. Unfortunately, the television does not support more advanced standards such as Dolby Vision or HDR10+, which are particularly important at this screen brightness. The lack of support for dynamic metadata means that in certain scenes, the television may struggle to fully reproduce details, especially in very bright areas – this is precisely when dynamic metadata could significantly improve image quality. Nevertheless, it is worth noting the excellent coverage of the wide DCI-P3 colour gamut, reaching as much as 96.4%. As a result, the colours displayed by the QNED87T6B model are more vivid and natural, enhancing the quality of 4K content viewed with a wide colour palette.

The colour reproduction in the P755 in "Cinema" mode, although it is the best factory setting, leaves much to be desired. The biggest issue is the white balance, where the chart clearly shows a spike in the red colour and a drop in the green colour. This leads to a shift in colours towards red, causing the colours on the screen to appear less natural and may look incorrect, especially in scenes with a white or neutral background. This is confirmed by the "Colour Checker" test, which reveals that the colours are indeed shifted towards red, affecting the realism of the image and reducing the perception of colour depth. In terms of contrast, the gamma chart analysis shows significant fluctuations, particularly in the dark areas of the image, where values drop below the optimal level of 2.4. As a result, darker areas may be displayed brighter than they should be. Additionally, the EOTF curve, responsible for brightness reproduction, sits slightly above the reference curve. The graph shows a slight increase in brightness to about 50%, after which there is only a minor drop. This leads to excessive brightness enhancement in the mid-range of the image and may result in loss of detail and distortion in brighter scenes.

The colour accuracy in the LG QNED, even in Filmmaker Mode, which is the best factory setting, is not without its flaws. The main issue is white balance – we noticed that the level of blue on the graph tends to drop. This results in a shift in colours towards yellow, making the image have a warmer tone than it should. This deviation affects the naturalness of colour reproduction, especially in scenes with a white or neutral background. The Color Checker test confirmed that some colours are distorted and deviate from reality. Such distortion can make film scenes appear less realistic, and details are presented in incorrect colours, negatively impacting the overall image quality.

Regarding contrast, the gamma graph analysis showed significant drops, while the optimal value should be 2.4. This means that the television may display darker parts of the image brighter in some scenes, which reduces their depth and dynamics. Additionally, on the EOTF curve, which is responsible for brightness reproduction, an unnatural drop was noted at the beginning. This phenomenon can result in less accuracy in reproducing dark scenes, which in turn affects the overall image quality. The television may not convey full black depth, causing more demanding scenes to lose realism and detail. As a result, viewers may notice that details in the darker parts of the image become less distinct.

After calibration, the colour reproduction on the television significantly improves when it comes to SDR content. The colour curves are now close to the ideal value, and the gamma is more stable. Although the dip at the beginning of the graph to the values is still present, the overall accuracy of colour reproduction is much better. The “Colour Checker” test shows that most colour samples have errors below level 2, indicating improved colour fidelity. A few deviations are present, but generally, the colours are now more realistic and consistent with reality.

Calibration also brings improvements in HDR content. The white balance has been corrected, translating to more natural colour reproduction. The EOTF curve, although now closer to the reference curve, still shows a slight boost in brightness at the beginning of the graph. This leads to minor distortions in very bright scenes, but the overall tonality and detail have been enhanced. Dynamic tone mapping works more effectively, improving image quality in bright areas and preserving more details.

Although the image from the device does not achieve full perfection, calibration brings significant improvement. After adjusting the settings, the television performs much better, offering more realistic and accurate colour reproduction in SDR and HDR content. While some shortcomings can still be noticed, calibration effectively eliminates many previous issues, ensuring better image quality and more natural colours.

After calibration, the colours in SDR content look very good. The improved white balance translates to natural and harmonious shades in various scenes. Thanks to precise gamma tuning, details in shadows and bright areas of the image are accurately reproduced. The television performs excellently in everyday use, offering vibrant, well-balanced images and solid colour quality in HD. The biggest beneficiary here is also contrast. The gamma graph has been stripped of significant errors, giving the television a new dimension.

As for the white balance in 4K HDR, it has also been significantly improved. However, some errors still appear at the end of the graph. This may be due to the television's overly aggressive local dimming, which in some scenes affects the inaccurate reproduction of colours. It's difficult to talk about an improvement in brightness represented by the EOTF curve. The television, due to its construction limitations, has some drawbacks, and we can't overlook them. The Color Checker test confirms the issue with colour saturation – even though the television offers a wide colour palette, it fails to fully convey the director's intent.

Despite these shortcomings, the overall picture quality after calibration is significantly better than before. Adjustments in white balance and gamma tuning make the images more vivid and the colours closer to reality.

The “Gradual Smoothing” function works quite well, effectively eliminating visible boundaries between different shades of the same colour. Thanks to it, tonal transitions are smoother. Unfortunately, this function is not available in HDR mode, which can affect the quality of tonal gradation in higher dynamic range materials.

In the case of image scaling, the television does not perform its best. There are noticeable edge cut-offs, particularly evident on the model's figure and the branches of trees. The blurring of details in these areas affects the overall sharpness of the image. This may be noticeable when watching content in a lower resolution. Additionally, SD quality image is displayed with slight cropping at the top as well as the bottom.

When it comes to lower quality materials, the gradation looks really good. The feature called "Smooth Gradation" effectively smooths out the most problematic parts of the image, while not negatively affecting the film grain. For the best effect, it’s worth setting it to a low level. This solution significantly improves the quality of the displayed content, making the viewing of lower resolution materials more enjoyable and smoother.

In terms of digital processing, the image is displayed without cropping, known as overscan. Although slight fraying of the branches can be noticed against the model's background, everything looks very good. Users should be satisfied with the image quality when watching low-quality materials like standard television. The TV handles this task exceptionally well, providing a satisfying visual experience, even with lower quality content.

The television offers decent, though not perfect, results in terms of motion smoothness. In the case of movies, the television has a "Flicker Reduction" feature that allows for adjustment of motion smoothness on a scale from 1 to 10. With this option, we can tailor the image appearance to cinema or more theatrical preferences (with lower or higher speed).

The television provides decent smoothness when watching movies, thanks to the “Tru Motion” feature, which allows adjustment of motion smoothing from 0 to 10. De-Judder regulates motion smoothness, while De-Blur adjusts motion sharpness. Users have the option to choose between a traditional cinematic effect with subtle juddering motion (lower settings) and a smoother, theatrical image. Although the latter deviates slightly from the cinematic standard, it may be appealing to many viewers.

As for gamers and sports fans, the LG QNED87 television with a 120Hz panel will surely not disappoint. And with the use of an IPS panel, the response time is typically better than that of VA panels available at a similar price. This ensures smoother gameplay and dynamic experiences when watching sports events.

The device offers a range of features useful for gamers, such as ALLM (Auto Low Latency Mode), VRR (Variable Refresh Rate), Dolby Vision for gamers, and Game Bar. ALLM automatically switches the TV to low latency mode, significantly improving responsiveness to commands from the controller and minimising input lag. VRR synchronises the screen refresh rate with the number of frames generated by the console, eliminating the tearing effect and providing smoother gameplay. Dolby Vision for gamers enhances picture quality by offering better colour and contrast reproduction in games that support this format. The Game Bar feature allows quick access to game settings and monitoring of key parameters such as response time.

However, the TV has some limitations. The 60 Hz panel prevents the display of signals with higher refresh rates at different resolutions, which may affect the fluidity of the image in dynamic games. Additionally, the lack of support for G-Sync technology for PC may impact the quality of gameplay on a computer. It is also worth noting that the HGiG mode, which aims to improve image quality in HDR games, does not work correctly on this model, negatively affecting the visual experience in HDR-supported games.

LG QNED offers a range of features that make it an excellent choice for gamers looking for a high-performance television. The TV is equipped with four HDMI 2.1 ports, allowing connection to the latest consoles like PlayStation 5 and Xbox Series X, utilising full functionality including Variable Refresh Rate (VRR) and Auto Low Latency Mode (ALLM). Thanks to the Game Bar feature, gamers can quickly and easily manage all game settings without needing to navigate complex menus. Parameters such as VRR, ALLM, Multi View, and frame rate monitoring can be adjusted. The TV also supports G-Sync and FreeSync technologies, which is particularly important for owners of Nvidia and AMD graphics cards. G-Sync and FreeSync synchronise the TV's refresh rate with the graphics card. The 120Hz panel guarantees incredible motion smoothness and image clarity. Combined with the Black Frame Insertion (BFI) feature, which is available at 60Hz and 120Hz, gamers can enjoy an even sharper and smoother picture. LG QNED87 is a television that meets the expectations of even the most demanding gamers, offering modern technologies and features that significantly enhance comfort and satisfaction during gaming.