Hisense U7NQ vs LG 55 B4

The Hisense U7NQ 65 television demonstrated significant capabilities on the luminance chart, exceeding the 1000 nit barrier and achieving very high brightness results without issue in the first, third, and fifth test scenes. However, as before, in the second and fourth test scenes, for example from the film Sicario 2, there are significant problems with maintaining brightness, and the results around 200 nits are very disappointing. Despite a large number of dimming zones, the algorithm in the television responsible for controlling these zones is unable to react appropriately — in this case, it significantly dims small elements like the moon or the light from a helicopter. The bright light that should blind us is too dim to be called an HDR effect. Nevertheless, it is worth praising the television for its high coverage of the DCI-P3 color gamut at 96%, which allows it to accurately reproduce most film scenes.

The HDR brightness performance of the LG B4 is impressive, even though it doesn't surpass 1000 nits. Its luminance stability is consistently strong across various scenarios, delivering a reliable viewing experience. The only instance where the TV shows slight weakness is in scenes with large areas of bright white, which has long been a challenge for OLED technology. However, perfect contrast, deep blacks, and excellent brightness ensure a fully immersive HDR experience. Furthermore, the TV’s remarkable 99% coverage of the DCI-P3 colour gamut enhances its colour vibrancy, making images appear rich and visually striking. This level of colour accuracy and brightness balance firmly places the LG B4 among the top choices for HDR content.

The Chinese manufacturer offers various picture settings in its televisions, but the best mode in this model is undoubtedly the Filmmaker Mode. Despite its name, this mode has its issues: the white balance, although roughly correct, is characterized by a strong dominance of warm tones due to the kick of red color, both in 4K and HD materials. The Colour Checker test confirms these errors — deviations in samples are visible in inappropriate shades. As for the brightness characteristics, the gamma responsible for HD materials shows values below 2.4, leading to some brightening of the screen. Meanwhile, the EOTF curve shows the television's problems with displaying small light elements, as confirmed by the previously described paragraphs.

The best factory preset offered by LG B4 is the "Filmmaker" mode, which we used throughout our testing. Straight out of the box, the TV delivered fairly accurate colour reproduction. However, the most significant issue in both SDR and HDR content was the white balance. In SDR, there was a noticeable red dominance, giving the image a distinct yellow tint, particularly evident in skin tones and whites. In HDR, this red hue persisted, but the lack of blue also introduced a greenish tint in certain scenes. Additionally, we observed some inconsistencies in grayscale and colour accuracy. Despite these shortcomings, the overall picture quality was still solid for most viewing scenarios.

Hisense televisions offer many tools for image correction, allowing users to adjust settings to their preferences. Therefore, we decided to utilize these capabilities to bring the image quality closer to reference standards. In the case of white balance, we managed to eliminate the dominance of red, resulting in more neutral colors, which allowed for a more realistic image in both 4K and HD materials. A similar improvement was noticed in the brightness characteristics. Gamma, which previously led to excessive screen brightness, was corrected, contributing to better detail representation in the darker areas of the image while maintaining a natural tonal balance.

However, the biggest challenge was the calibration of the EOTF curve, which is responsible for brightness in 4K materials. At first glance, the EOTF value appeared almost perfect, but detailed tests showed a slightly different outcome. Upon closer inspection—especially using the filter on the right side of the EOTF chart—we noticed how the television manipulated 4K film materials, often significantly boosting brightness. This effect was particularly noticeable in scenes from films such as Pan and Billy Lynn, where the television attempted to artificially increase the brightness of elements, affecting their naturalness. Despite these imperfections, the calibration yielded positive results, especially in terms of tonal improvement. For most users, the final effect should be satisfactory, especially if they aim to bring image quality closer to professional reference standards.

LG B4 has long been known for offering advanced calibration tools, and it remains one of the few manufacturers that allows such in-depth image adjustments. Thanks to these tools, we calibrated the device to an exceptional standard. The result was incredibly low deltaE errors, considered at a reference level. Both SDR and HDR content now display exactly as the filmmaker intended. This level of precision is one of the reasons LG TVs are frequently used as preview monitors in graphic design and post-production studios.

Obraz gładki i gradientowy - funkcja obecna - na sekwencji testowej nie zauważyliśmy aby funkcja cokolwiek wnosiła- wyłączyć

In this section, we will revisit the smooth transition function while also examining how the TV handles lower-quality content. As we’ve found, the setting responsible for smooth gradation is generally effective, though it does have its drawbacks. While the function works well in SDR content, it becomes less useful in HDR content. Even at the lowest setting, it can blur important details, so we advise against using it in such cases.

The image scaling on the LG B4 is assessed moderately positively. While there is no noticeable edge doubling, the image tends to be somewhat "soft." This can be adjusted by tweaking the sharpness slider to improve the clarity.

Hisense U7NQ has a refresh rate of 144 Hz, which definitely contributes to smooth motion. For movie enthusiasts, there are two features available: judder reduction and motion blur reduction. The judder reduction feature minimizes the effect of so-called judder, which is the unpleasant stuttering of the image, particularly noticeable at lower frame rates. On the other hand, motion blur reduction helps sharpen fast-moving objects, which is useful when watching dynamic action scenes.

As for motion blur, the TV has a decent response time, so excessive blurriness is not visible, except in specific situations, such as the test with the little green alien on a dark background. In such cases, slight artifacts may appear, but overall, the TV handles dynamic images well, providing satisfactory motion quality.

The maximum refresh rate on the LG B4 is 120 Hz, the bare minimum for those requiring high image fluidity. The manufacturer has equipped the TV with a multi-stage motion smoother called "TruMotion." This feature is split into two sliders: one controls the sharpness of moving images (De-Blur) and the other adjusts judder (De-Judder). Both sliders can be set between 0 and 10, with each level affecting the smoothness, so users can easily find their preferred setting.

The LG OLED B4 panel boasts an impressive average response time of 0.1 ms (based on our measurements), delivering an exceptionally clear image that surpasses the capabilities of LCD TVs, which often have response times of several milliseconds. This is particularly noticeable in the "UFO Test" images, where no trailing blur is visible behind moving objects.

Hisense U7NQ offers everything a gamer might need for comfortable gameplay. The TV supports a refresh rate of 144 Hz, providing an incredibly smooth image, especially in dynamic action games. The VRR (Variable Refresh Rate) feature ensures that the image adapts to changing frames per second, eliminating stuttering and tearing. Additionally, there is an ALLM (Auto Low Latency Mode) feature that automatically switches the TV to game mode, minimizing input lag.

The TV also supports Dolby Vision, which is particularly important for gamers who value high contrast and vivid colors in games that support this format. The Hisense U7NQ also has a Game Bar feature that allows quick access to essential settings during gameplay, as well as support for G-Sync technology, which further reduces image tearing.

Unfortunately, despite the wide range of features, support for the most popular HDR format in gaming — HGiG — is lacking. This may be disappointing for gamers who expect optimal detail representation in HDR scenes. Nevertheless, the remaining features make the Hisense U7NQ a solid choice for any console gaming enthusiast.

The LG B4 has four full HDMI 2.1 ports, each providing 48Gbps bandwidth. This ensures smooth activation of all relevant features without issues, making the television highly suitable for gaming. With its low input lag and extensive functionality, including well-implemented HGIG mode and Dolby Vision gaming with low latency, the B4 is a strong contender for gamers who demand high quality.

A standout feature is GameBar, which allows for on-the-fly adjustments without interrupting gameplay, as well as image adaptations for those with visual impairments. Another key point is that when VRR technology is enabled, the television maintains its contrast, thanks to the OLED panel's structure, though slight flickering in grey shades is to be expected.

In conclusion, the LG B4 is an ideal choice for gamers, seamlessly combining high performance with excellent gaming features. Its 120Hz panel and HDMI 2.1 ports make it a standout option for those seeking top-tier gaming experiences.