LG 55 B4 vs Panasonic Z95A

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.

Panasonic Z95A shows class when it comes to HDR performance. In luminance tests, it achieves a level of 1800 nits, which has a real impact on movie watching. Scenes from Life of Pi or Gemini Man look fantastic – the television effortlessly reproduces details and the intensity of bright spots, making a strong impression with its power. In more demanding moments, like the final scene from The Meg, you can see how bright light floods the screen. In such moments, brightness drops, which is typical for organic panels. Nevertheless, a result around 1000 nits can still be considered excellent, still providing very good picture quality. Additionally, the television offers great coverage of wide colour gamuts – up to 98.6% for DCI-P3 and 74.5% for BT.2020. This means that colours are not only vibrant but also deeply saturated, allowing full appreciation of the richness of details, especially in HDR scenes. Such coverage makes colours look more realistic, and the HDR effect gains intensity and accuracy. All this impressive HDR effect is thanks to MLA technology, which enables such high luminance and excellent image detail. With it, the Panasonic Z95A offers HDR at a level that truly makes a difference.

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.

The best picture mode on the Panasonic Z95A is undoubtedly the Filmmaker mode. This mode offers quite good image reproduction, but it is not without certain flaws that need addressing. Primarily, the white balance, for both 4K and HD content, tends to be dominated by red and blue hues. This leads to a slight pink tint in the image, particularly noticeable in bright, white scenes. Such discrepancies can be seen in the comparative image below, which illustrates the issue well. The Colour Checker test also confirms these inaccuracies, showing slight shifts of dots towards the mentioned shades.

In terms of gamma brightness characteristics, it performs very well, with only minor issues when brightening small details. A greater challenge arises with the EOTF curve, which is responsible for controlling brightness in 4K HDR content. Here, there is a slight boost in brightness above the reference value, which sometimes makes the image overly bright, especially in more demanding scenes. While the Filmmaker mode is definitely the best choice on the Z95A, these aspects require refinement to fully harness the television's potential.

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 calibration, Panasonic Z95A showcases its full potential, delivering an almost perfect image. The television offers extensive adjustment capabilities, which we have fully utilised. The white balance post-calibration is absolutely flawless, and the errors in SDR content at 0.5 are at an exceptionally reference standard. The same goes for 4K HDR content – the screen tint has been completely eliminated, and the white balance is now exemplary.

The colour palette and Colour Checker test confirm the excellence of the calibration. Errors below 2 are a result that will satisfy both professional calibrators and cinema-quality image enthusiasts. Significant changes have also occurred in the brightness characteristics – the EOTF curve has been aligned, eliminating previous issues with excessive brightness. Additionally, a small error in gamma has been reduced.

Before calibration, the image was acceptable, but now it's in a completely different league. It's a true feast for the eyes, and the quality is hard to compare to anything else. Once fine-tuned, the Panasonic Z95A becomes a true master of colour reproduction.

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.

In the case of lower quality materials, the "Gradation Smoothing" function is responsible for smoothing tonal transitions. The best results are achieved with an intermediate setting – while they are not spectacular, the function works correctly and does not introduce unwanted effects into the image. It can be evaluated as average, but sufficient for improving the quality of tonal transitions.

As for digital processing, or upscaling, the picture looks surprisingly good. It is flexible and pleasant to the eye, which makes lower quality content, such as standard television or YouTube, look quite decent. However, minor issues can be observed, such as "aliasing" on edges, e.g. branches in the background. Nevertheless, this does not significantly affect the overall viewing experience, and the television handles these materials in an acceptable manner.

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.

Panasonic Z95A, with a 144 Hz panel, offers excellent image smoothness. For movies, there is an "Intelligent Frame Creation" feature that allows for improved smoothness and reduction of blurring. Users have two sliders at their disposal: "Motion Blur Reduction" – responsible for clearer and sharper details in fast-moving scenes. "Film Smoothness" – adds smoothness by creating additional frames between the originals, making motion appear more fluid and natural with the effect of "soap opera"

As a result, viewers can adjust the settings to their own preferences. Movies and less dynamic content look smooth and natural, which should satisfy most users.

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.

Panasonic Z95A this year shows that the manufacturer has made a huge leap forward in support for gamers. The television offers practically everything you can expect from a device in this range. Support for ALLM (Auto Low Latency Mode) and VRR (Variable Refresh Rate) ensures smoothness and no tearing in dynamic games. The 144 Hz panel allows for incredible fluidity, and the additional support for resolutions other than 4K provides greater flexibility, which is a big plus for gamers using various configurations.

Also noteworthy is the unique and rather specific "Game Bar." Its bubble interface stands out from the competition and allows quick adjustment of key settings such as VRR, brightness level, or picture mode, without the need to interrupt gameplay.

However, in this class of devices, there has been a slight disappointment – Panasonic Z95A only offers two HDMI 2.1 ports instead of four. This is definitely too few for a premium television, especially in times when many people have more than one device requiring full HDMI 2.1 support, such as a next-gen console or a high-end computer. In this category, it's hard to accept, especially given the high aspirations of this model. Despite this, the television is an excellent choice for gamers, offering versatility and functionality at the highest level.