Philips OLED909 vs TCL P7K / P79K

The Philips OLED909 impresses with the quality of its HDR effect, achieving up to 1500 nits of peak brightness in tested scenes. This is an excellent result, placing this television among the best OLED models on the market. The MLA matrix, also used in models like the Panasonic Z95A and LG G4, plays a key role here, allowing for exceptionally bright and detailed reproduction of dynamic scenes. However, it's worth noting that in the most demanding scene from the movie The Meg, the brightness drops to around 700 nits. This is a typical phenomenon in OLED technology, where intensely bright full-screen images cause a limitation of luminance. Nevertheless, the HDR effect still looks very good, and the television performs better than most competitors under similar conditions. The wide color gamut coverage also deserves praise. The OLED909 offers 95% coverage of DCI-P3, ensuring the television can display vivid and realistic colors.

When evaluating the HDR effect, we must make it clear and without marketing embellishment: the P7K/P79K is not and was never meant to be a master in this field. The maximum peak brightness that this panel can generate is only around 300 nits. This is a borderline value, a sort of thin red line between what can be considered a barely satisfactory HDR signal and what is really not much different from standard dynamic range (SDR), unfortunately leaning towards the latter. Synthetic tests found brutal confirmation in reality – our measurements taken during movie screenings showed that luminance in key bright parts of the content rarely exceeded the threshold of 200-250 nits. Therefore, this is not a television that would allow content produced in a wide tonal range to truly shine, and we must openly acknowledge that.

Unfortunately, the issue of color reproduction is presented equally restrained. Although the manufacturer positions this model in the "QLED" family, thanks to the use of a PFS LED filter, the results do not match the heightened expectations. The coverage of the wide DCI-P3 color gamut is only 86%. Compared to the market, this is at best an average result, as most devices that employ additional layers to expand the color spectrum easily achieve values at a minimum level of 90-92%.

Like other televisions, the Philips OLED909 has been tested for color reproduction in factory modes. The best mode turned out to be Filmmaker Mode, but despite its name, it is not free of flaws.

The biggest problem is the white balance. Both in HD and 4K HDR content, there is a noticeable dominance of green and red shades, which causes a distinct yellowing of the screen. This effect is particularly visible in test materials, for example in the scene with Tom Cruise in the foreground, where the difference compared to the calibrated image is very clear.

Regarding brightness characteristics, the gamma in HD materials was boosted too much - it was below the reference value of 2.4, which gave the image a "milky" filter and affected the overall clarity. In the case of 4K HDR content, we noticed the opposite phenomenon – there is a clear drop at the beginning of the EOTF curve, indicating problems with reproducing the smallest details in dark scenes. Although the Filmmaker mode offers acceptable quality, noticeable errors in white balance and brightness characteristics show that the television requires additional calibration to fully reveal its potential in color reproduction.

Every reliable image quality assessment must begin by selecting the most optimal factory mode. In the case of the tested model P7K/P79K, the choice was confidently made for the "Film" mode. It is this mode that presents an image closest to the creators' intentions, avoiding both the exaggerated brightness of dynamic mode and the excessive dimming known from eco settings. And it must be admitted that, for a device in this price range, the factory calibration is surprisingly decent, although it is not free from a few stumbles. The most noticeable flaw turned out to be an imperfectly adjusted white balance. A slight dominance of the blue component gives the image a subtly cool, chilly character, thus deviating from the exemplary neutrality that the director wanted to show us. The television performs much better in reproducing the grayscale in a standard dynamic range – the gamma curve is executed almost perfectly. A minor reservation can only be made for the darkest parts of the image, where a slight deviation from the norm causes a loss of some detail in the shadows. The most serious challenge for TCL's software, however, was the interpretation of the HDR signal, which is illustrated by the EOTF curve. The television follows its own, rather free path here – the darkest details are disproportionately brightened, followed by a noticeable slowdown in brightness increase for midtones. Fortunately, most of these imperfections are software-related issues that can be eliminated. With this thought in mind, we proceeded to the professional calibration process.

Philips OLED909 offers tools for image calibration, which significantly improves its quality. After calibrating the Filmmaker Mode, the television presents a much more natural color reproduction. The white balance after calibration looks very good. Although we noticed slight deviations in the blue hue in HD content, the errors fall within acceptable limits, and the image looks much better than in factory settings. The brightness characteristics, including gamma and EOTF, have also been distinctly improved. The television no longer has issues with excessive brightening or darkening of the image. Both dark and light details are now rendered correctly, making the image look very good in every scene. After calibration, the Filmmaker mode in the Philips OLED909 offers excellent image quality that will meet the expectations of even the more demanding users. The calibration fully utilizes the potential of this model.

The calibration process turned out to be a home run, especially in the context of standard dynamic range (SDR) content. We successfully managed to eliminate the TV's tendency to emphasize cool tones, restoring the whites to their natural neutrality. Furthermore, precise adjustments allowed us to correct a slight error in the gamma curve, so the darkest areas of the image regained their proper depth, without a trace of unnatural brightening. The effects are measurable and impressive – in the ColorChecker test, the vast majority of color reproduction errors fell below the perceptual threshold, achieving a deltaE value below 2. This is a result that would not shame much more expensive constructions. Unfortunately, in the case of HDR content, we hit a wall in the form of the inherent limitations of the panel itself. And although we managed to bring the colors in line, the software's specifics mean that the TV still adapts brightness in its own way, as evidenced by the persistent, non-standard EOTF curve. In summary, calibration brings tremendous added value, but one must be aware that it cannot overcome certain physical barriers. A slight boost in black levels, resulting from the lack of local dimming, and limited peak brightness mean that HDR content will not always be able to showcase its full potential. This is simply not the main task of this display; its true strength, especially after professional tuning, lies in the viewing of SDR materials.

Philips OLED909 offers a distortion reduction feature aimed at smoothing tonal transitions. Unfortunately, the effectiveness of this feature leaves much to be desired. Setting it to "Medium" yields some results, but it comes with the risk of blurring essential details in the image. For this reason, we do not recommend using this option unless you are focused on mitigating visible artifacts at the expense of detail.

When it comes to image scaling, the television presents a very pliable image, which may appeal to viewers who prefer a softer image. Those expecting sharper clarity will also find a solution, as image scaling can be adjusted according to individual preferences in the settings.

After a series of harsh evaluations, fortunately, the time comes for praise, and this is due to the TCL AiPQ image processor for its work in digital processing and content scaling. It should be noted right away that we are not talking about the level known from flagship designs; nevertheless, in the price segment represented by the P7K/P79K, the results achieved are more than solid. The feature that smooths tonal transitions performs particularly well, effectively eliminating posterization, which are the characteristic bands often visible in materials with higher compression, such as from the YouTube service. The algorithm can elegantly remove unwanted gradients, which ultimately looks really good. The television also competently handles upscaling, which is the task of raising low-resolution materials to 4K standard. The output image, although it may seem a bit too sharp out of the box, fortunately, is not a problem. The software allows for easy adjustment of this parameter using a sharpness slider, so the final appearance can be easily tailored to personal preferences.

The Philips OLED909 with a 144 Hz panel offers excellent image fluidity, which should satisfy both movie lovers and gamers. Additionally, the television is equipped with a smoothing feature called "Motion Style," which allows precise adjustment of image fluidity to personal preferences. In the settings, we find two sliders: "Fluidity," which regulates the fluidity of motion in movies, and "Motion Blur Reduction," which helps eliminate minor artifacts and distortions in dynamic scenes. This feature works well, making even fast movements on the screen clear and readable.

The issue of fluidity and sharpness of the image in motion is inextricably linked to the fundamental parameter of the panel, and in the case of the TCL P7K/P79K, we are dealing with a panel that has a native refresh rate of 60 Hz. This specification already defines its capabilities and makes it difficult to unequivocally recommend it to enthusiasts of dynamic sports broadcasts. During rapid camera movements, the image loses sharpness, and the panel itself also shows a slight tendency to blur, which may be noticeable to more sensitive viewers. Fortunately, not everything in this aspect has been left to chance. The manufacturer has implemented a simple motion smoothing system, which is primarily used in film materials recorded at 24 or 30 frames per second. Thanks to a dedicated slider, the user can independently decide on the final character of the motion – from a fully cinematic, slightly juddery image to achieving a very smooth, almost theatrical effect. It is a simple yet effective tool that allows users to tailor the viewing experience to their own preferences.

The Philips OLED909 is a television that meets practically all the requirements of gamers. Equipped with ALLM (Auto Low Latency Mode), VRR (Variable Refresh Rate), and support for Dolby Vision, it guarantees excellent gaming experiences. Additionally, the television offers very low input lag, ensuring that the response to player movements is instantaneous, which will be especially appreciated by fans of dynamic games.

The television easily supports any resolution at 120 Hz, and even higher refresh rates. The HGiG feature, responsible for the correct display of HDR content in games, works as it should, making the image in game mode balanced and tailored to the guidelines of console manufacturers.

The OLED909 also includes a Game Bar feature that allows for quick previewing and changing of game-related settings. Although the interface of this solution may seem less visually appealing than that of competitors, it serves its purpose well by offering all the most important options in one place.

Although on paper the native 4K@60Hz matrix might suggest that the TCL P7K/P79K is not a TV tailored for gamers, the reality turns out to be surprisingly different. On the contrary, the manufacturer has ensured a rich package of features that make it a very friendly companion for next-generation consoles. Onboard, we find key technologies such as ALLM, which provides automatic switching to low-latency mode, and VRR, or variable refresh rate, which eliminates screen tearing. The list is completed by support for Dolby Vision Gaming and a simple yet functional Game Bar. However, the real and extremely pleasant surprise is something else. It turns out that the TV easily supports high refresh rate signals of 120 Hz, but at lower resolutions – 1080p and 1440p. This is fantastic news for console owners who know full well how rarely games run in native 4K at a full 120 frames per second. The ability to choose between higher resolution and doubled smoothness is therefore an extremely sensible compromise.

In summary, although the P7K/P79K may not be the target screen for the most avid tournament gamers, it offers a package of options for the casual or occasional console user that is hard to find among many competitors at this price point.