LG 55 B4 vs Hisense U7Q PRO

The brightness results in HDR materials LG B4 are very good. It is true that none of them exceed 1000 nits, although the luminance stability is excellent and looks practically the same in every scenario. The only moment where the tested television performs worse is the last scene, although this should not come as a surprise. Large frames filled with a lot of white have always been, and will likely continue to be, somewhat of a weakness for OLED televisions. However, the combination of perfect contrast, black levels, and brightness in the LG B4 allows for a full spectrum of the HDR effect. Additionally, the incredibly high coverage of the DCI-P3 colour gamut, which reached 99%, deserves recognition. As a result, colours look incredibly vibrant and stunning.

U7Q PRO is truly a bright television. In synthetic tests, it achieved over 1500 nits, which is an outstanding result for this price bracket. Such brightness – at least in theory – allows it to display HDR content as intended by the creators, even in more demanding scenes with strong lighting. In practice, it performs very well, but not always perfectly. In bright scenes with large areas – like the test screen with intense sunlight from the film "Pan" – the U7Q PRO makes a huge impression. It can even dazzle with its light, which is definitely an advantage in the context of HDR content. Unfortunately, it doesn’t always manage to maintain this when there are many small bright details on a dark background. In such moments, the local dimming algorithms tend to dim some bright elements to maintain good blacks – and the side effect is that some details simply vanish from the frame. This is a classic compromise in mini-LED televisions – and the U7Q PRO is no exception. With such a large number of dimming zones, however, one could have hoped for a slightly more mature algorithm responsible for their control. Fortunately, the overall perception of HDR content is very positive. The U7Q PRO is not only bright but also colourful, thanks to the PFS LED (QLED) coating, the coverage of the DCI-P3 colour palette is at 95%, and BT.2020 around 73%.

The best factory mode prepared by the manufacturer is "Filmmaker," and we used it throughout the entire testing procedure. We must admit that the unit we received straight out of the box had quite decent colour reproduction. The biggest issue in both SDR and HDR content turned out to be white balance. In the former, there was a strong dominance of red, resulting in a noticeable yellow tint in the displayed image, particularly evident on skin tones and whites. In high-quality materials, this colour was also pronounced, but due to a lack of blue, there were also signs of green visible. Besides these shortcomings, we also encountered issues with greyscale and the colours themselves.

We tested the U7Q PRO in the best possible picture mode that this model offers – Filmmaker Mode. And indeed, this mode performs the best in terms of colour reproduction. But that doesn’t mean it’s perfect. In our test unit, both in SDR and HDR content, the image had a slightly cooler tone. The white balance was shifted towards blue, which made the overall image feel a bit "cooler." It may not be glaring, but it is definitely noticeable – particularly on white backgrounds, which instead of being neutral, seemed slightly bluish. Additionally – as we mentioned earlier – the television has a tendency to slightly brighten and oversaturate the image, which is also confirmed by the gamma and EOTF charts. All of this together means that without calibration, the image may appear somewhat unnatural – too cool, with slightly exaggerated dynamics. That’s why we decided to perform our own calibration – and you can see its effects and charts below.

LG B4 has been providing very advanced calibration tools in its TVs for years. We can even say that as the only manufacturer on the market, it allows for such deep intervention in image adjustment. Thanks to these, we were able to calibrate the device so well. The evidence of this is the extremely low deltaE errors, which can be said to stand at a reference level. Both SDR and HDR materials now look exactly as the film director intended. It is no coincidence that TVs of this brand are most often used as preview screens for various graphic or post-production studios.

Thanks to calibration, we've managed to tame the white balance in SDR and HDR content. For SDR material, the effect is really quite good – the image becomes neutral, cohesive, and simply pleasant to watch. Everything looks the way it should.

HDR performs a bit worse. Although the white balance looks correct and overall the image gains naturalness, unfortunately, the delta E errors are still noticeable. Why? Because Hisense's U7Q PRO model does not give us full control over how the television manages brightness in HDR mode. And this is where the limitation arises. When we look at the EOTF curve for HDR content, it clearly shows what we mentioned earlier – at the beginning of the graph, there’s a noticeable drop, meaning the television darkens the smallest portions more than it should. On the other hand, those brightest elements can be overly bright. As a result, some details are lost, others are too aggressive, and overall control over brightness doesn't always align with what we’re trying to achieve during calibration.

Does the image look better after calibration? Definitely, yes, in terms of colour. But when it comes to brightness management in HDR, one must accept that the Hisense U7Q PRO will still do it in its own way.

In this paragraph, we will take another look at the tonal transition smoothing feature, but we will also check how the TV handles lower quality material. As we have managed to check, the setting responsible for smooth gradation works quite effectively, although it has its weaker moments. While the feature works well with SDR content, it becomes less useful with HDR content. Even at the lowest of options, it blurs essential details, so we advise against using it.

The image scaling on LG B4 is rated fairly moderately positively. Although there is no edge splitting, the image itself is naturally "soft". We can change this by adjusting the sharpness slider.

If someone happens to come across older materials where the banding issue arises – Hisense has a solution for that. In the U7Q PRO, we find a feature called "Smooth and Gradient Picture". Set to the "Medium" level, it works really well – eliminating most gradient problems without smoothing the entire image like a blur in Photoshop. 😉 Film grain remains, details don't disappear – that's exactly how it should work. Well done on the implementation!

As for scaling weaker materials, it's simply good. It's not at the level of the most expensive TVs with advanced upscaling, but older content looks good. There is some minor banding at very low resolutions, but that's perfectly normal and hard to avoid. On the plus side – even with the oldest materials, there is no overscan effect, the image isn't cropped or artificially stretched.

The maximum refresh rate we can set on the LG B4 is 120 Hz. This is the absolute minimum for those who require high image smoothness. The manufacturer has implemented a multi-level motion smoother called "TruMotion". It has been divided into two separate sliders that adjust the sharpness of moving images (De-Blur) and stuttering (De-Judder). Both sliders can be set in the range from 0 to 10, with each level affecting the degree of smoothness, so everyone can find their sweet spot.

The LG OLED B4 panel features an average response time of 0.1 ms (which directly results from our measurements), allowing for an incredibly clear image, unattainable for LCD TVs, which have response times of even several milliseconds. This can be clearly seen in images from the "UFO Test", showing no trace of blur trailing behind the object.

“Speed” – this word was most frequently mentioned during our tests of the U7Q PRO. The television is equipped with a 165 Hz panel, which in itself is impressive – especially considering we’re talking about a mid-range model. Of course, PC gamers will benefit the most from its full capabilities, but even during everyday viewing, it’s clear that this is a fast and efficient panel. Like most modern televisions, the U7Q PRO can also enhance the smoothness of films that were originally recorded at 24 frames. In the menu, we find a slider that allows us to adjust the effect to our own preferences – from a more cinematic feel, with subtle motion, to a stronger smoothing with the characteristic “soap opera effect.”

The LG B4 television is equipped with four full-fledged HDMI 2.1 ports with a full bandwidth of 48Gbps. All functions corresponding to this standard activated without any issues, and throughout the entire testing procedure, they caused no problems. The combination of such extensive functionality and low input lags leads us to say that the tested television is truly designed for gaming. This is not surprising, considering that the manufacturer has always placed great emphasis on this. Therefore, we can enjoy both a properly implemented HGIG mode and gameplay in Dolby Vision with low latency. Such a tandem will surely attract the attention of all passionate gamers for whom quality is the most important.

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 enables image adjustments for individuals with visual impairments, which is an extremely nice touch. Another important piece of information is that when the VRR technology is turned on, we will not experience a drop in contrast. This is, of course, due to the construction of the panel and the lack of conventional backlighting. However, it is normal for shades of grey to flicker slightly, although this is a characteristic feature of this function regardless of the manufacturer and the television.

In summary: The LG B4, like all OLEDs from the manufacturer equipped with 120Hz panels and HDMI 2.1 ports, creates a harmonious whole with the console. In practice, it is a complete television, and if we expect the highest possible efficiency in gaming, the B4 will be the ideal choice.

Hisense U7Q PRO is a TV that seems to have been designed with gamers in mind. We have practically everything that can be expected from a gaming screen: variable refresh rate (VRR), automatic mode (ALLM), and as many as four HDMI 2.1b ports with full bandwidth of 48 Gb/s. Additionally, there’s a clear and quite functional Game Bar, as well as a well-implemented Dolby Vision GAMING mode that works seamlessly with Xbox Series S and X consoles.

Sounds like the ideal? Well, almost. Unfortunately, Hisense has still not implemented the HGiG feature, which is the system's tone mapping limitation on the TV's end. This means that when configuring HDR brightness on the console, we do it “by eye” or look for settings in online guides, as the screen does not display its actual brightness range. It’s a shame – because HGiG makes it easier to match the console to the TV and helps avoid overexposed or too dark scenes in HDR games.

Fortunately, the other elements work very well. Input lag is low, responsiveness is excellent, and the handling of other features is faultless. And although not everything worked perfectly, the U7Q PRO can still be confidently recommended to gamers.