LG 55 B4 vs Philips PUS7000

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.

Unfortunately, the PUS7000 is not suitable for watching HDR content. This screen is simply too dark. A brightness level of 200 nits is insufficient to display this format correctly. Even if a HDR signal message appears on the screen, the image will resemble a standard SDR recording. Therefore, it’s better to stick with the latter format to avoid errors in displaying bright scenes, as you will read below. The situation is worsened by the fact that this is a classic LCD model without additional layers that improve colours, such as QLED or PFS. As a result, colours in HDR may seem washed out. Ultimately, this provides a worse effect than in the standard SDR format, which is simply better suited to the capabilities of this panel.

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 television in movie mode, which theoretically should provide the best and most natural colours. And indeed, this mode is quite correct; however, when we connected the calibration equipment, its biggest flaw became apparent. The PUS7000 has significant shortcomings in displaying reds. Poorly tuned white balance and too low saturation of this colour cause the image to appear too cool. As a result, one might get the impression that the displayed content lacks vibrant colours. The situation is worsened by the fact that both SDR and HDR content are excessively brightened. This is confirmed by the gamma curve and EOTF graphs, which show that the television displays the image brighter than it should. This causes scenes to lose their depth and can make them seem slightly washed out. Fortunately, in the Philips menu, we find plenty of features to improve these aspects, so we immediately proceeded to calibration to see what we could extract from this screen.

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.

After professional calibration, it’s evident that the PUS7000 responds well to image adjustments. In this price range, that’s not a given. The effects are best evaluated in two scenarios, depending on the content we plan to watch. SDR performs the best. After our adjustments, the image looks really good. Most colour errors have dropped below level 3, which is the threshold at which discrepancies usually become visible to the naked eye. Movies, series, sports, and regular television present naturally, without unpleasant deviations. If someone mainly watches classic channels or streams in HD quality, the difference after calibration will be noticeable straight away. However, it must be said clearly that the PUS7000 is still not a television suited for proper HDR, and calibration doesn't change much in this regard. The reason lies in the hardware: colours remain too unsaturated. The television lacks solutions that widen the colour gamut, such as PFS filters or a quantum dot layer, so the panel simply cannot display the intense colours required by HDR. This is most evident in reds, which still look washed out. This limitation cannot be circumvented through menu settings, as it stems from the design of the backlighting and the panel itself.

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.

The PUS7000 handles digital image processing quite well. The distortion reduction feature deserves praise, as it effectively smooths unwanted tonal transitions even at a low setting. However, it has its downside: with too aggressive operation, it can introduce undesirable artifacts on the screen. It would be a good idea to experiment with this setting to find the golden mean between a smooth image and the clarity of details.

The upscaling, or enhancing the quality of lower materials to 4K, is decent. The image after processing is very "soft," which is typical of almost all Philips TVs. The edges are plastic and smooth, making the image look cohesive. If someone finds it too soft, it can always be adjusted with the sharpness slider in the menu for a more pronounced effect.

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.

In this regard, we actually have no good news. It might seem that the biggest downside is the lack of a 120 Hz panel, but in this price range, that's actually the norm, and it's hard to expect more. However, the worst part is that the television has no motion smoothing features. There are no supporting systems in place for either movies or sports. We have to come to terms with the fact that the image on the PUS7000 is processed "raw." This means that during dynamic scenes or fast camera movements, motion can appear choppy or unclear. We have no option to enable any smoothers that could alleviate this 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.

Even though the PUS7000 isn’t marketed as a gaming TV, it doesn't perform as poorly in this category as one might expect. True, it doesn't support 120 Hz refresh rates, which is understandable at this price point, but the manufacturer has included several important features that significantly improve the console gaming experience. The most important of these are VRR and ALLM technologies. VRR is responsible for synchronising the screen with the number of frames generated by the console. This means the image doesn't "tear" and remains consistent even during sudden drops in frame rates while playing. On the other hand, ALLM is a solution that automatically switches the TV to a mode with the lowest latency immediately after detecting a signal from the console. All these parameters are easily accessible thanks to the Game Bar feature. This is a special control panel for gamers that can be brought up on the screen at any time. It allows for a quick view of current settings and connection status without interrupting gameplay, which is a very convenient solution.