Samsung QN990F vs Philips OLED950

The Samsung QN990F belongs to the bright televisions category, and this is immediately evident in tests. In measurements, it achieved around 1300 nits, which in practice allows for enjoying films as their creators intended. Bright scenes have the right intensity, lights shine, and the experience is truly cinematic. In standard test patterns, sequences number 1, 3, and 5 performed best – there, brightness maintained around 800-1000 nits, and the image looked very natural. In more challenging segments, it could drop to around 600 nits, but even so, the level remained sufficient for details to be clearly visible. However, it should be added that in highly contrasting shots, the halo effect returns – the same one we mentioned regarding black levels. Bright elements can leave a halo on dark backgrounds, and this stands out immediately. Since we are dealing with a QLED, the colour palette is expanded, and the colours appear striking. The problem is that with such a flagship model, we expected better numbers. 91% DCI-P3 coverage and about 67% BT.2020 are results that can be considered solid, but not outstanding. This gives a vibrant and appealing image, yet the competition in this and lower price tiers can showcase even more.

The OLED950 is a phenomenal television for consuming content in HDR format, primarily thanks to the innovative Tandem OLED panel. With this technology, the screen can generate astronomical brightness levels, reaching over 2000 nits in film scenes (on test patterns). This is an exceptional result that places the OLED950 among the world’s top displays available on the market. However, it is important to note a specific characteristic of this solution – at moments when full-screen bursts of light appear on the screen, brightness can drop by as much as half. It is worth emphasising, though, that values above 1000 nits on a full screen are still an outstanding result. This allows for the HDR image to be displayed exactly as filmmakers would wish, maintaining the dynamics and impact of bright scenes.

The use of the Tandem OLED panel has also brought tangible benefits in terms of colour reproduction, improving elements that traditional WOLED panels struggled with compared to their QD-OLED competition. For the OLED950, the colour gamut coverage is broader than in classic WOLED panels, reaching nearly 100% of the DCI-P3 colour space and a solid 82% of the demanding BT.2020 palette. Although these results still do not match the high standards of QD-OLED panels, the difference diminishes during real-world use. We cannot deny that in the vast majority of films, colours look simply fantastic on this model – they are saturated, vibrant, and full of depth.

We tested the QN990F in Filmmaker mode, which is the best available right out of the box. Right from the start, we noticed several significant errors. The biggest issue concerned white balance. Due to too little blue, and also improper ratios between red and blue, the image – especially in scenes with a lot of white – appeared too yellow, and at times even orange. On the Color Checker palette, these errors didn't look dramatic as they hovered around a value of 4, but in everyday viewing, especially with strong whites, they were most noticeable. We also observed issues with brightness management – the television struggled to maintain detail in the smallest parts of the image, mainly due to the way it controls the backlighting zones. Fortunately, Samsung offers a lot of room for adjustment when it comes to calibration settings. We know that with the right calibration, much more can be extracted from this screen.

We tested the OLED950 model in Film mode. Although it is theoretically the best and most faithful preset on this television, in practice it proved not to be free from flaws. Interestingly, in the unit we tested, the biggest challenge was not the white balance itself – although it did show a slight tendency to give the image a pinkish hue. The main issue lay in the way the television managed brightness, both in everyday SDR content and in demanding HDR scenes. The analysis of the gamma graph and the EOTF curve leads to one key conclusion: the television excessively exposes brightness in the lower registers. This results in the image appearing less contrasty than the panel technology allows. Details in dark areas that should remain perfectly black (characteristic of "OLED black") are simply unnecessarily highlighted and brightened. Fortunately, these errors can be corrected using the appropriate tools, which is why – as always – we proceeded with professional calibration.

After completing the calibration, we managed to bring the white balance back to order and eliminate the previous shortcomings in the shades of blue. As a result, the image no longer looked as if it had a slightly yellowish filter applied – the whites are purer, and the overall presentation is much more natural. We also managed, to some extent, to tame the brightness characteristics in HDR content. The television now handles detail retention in blacks significantly better and does not lose them to the same degree as before. However, when we look at the EOTF curve and the way the QN990F reproduces brightness in films, it is evident that it still tends to accentuate details in dark areas more strongly. This is a characteristic feature of Mini-LED technology and, more specifically, the way it is managed by the QN990F, which is practically impossible to completely eliminate. Despite this, after calibration, the image appears much more natural, mainly due to the correct exposure of white light. The final effect is definitely more pleasant to perceive and closer to what we expect from a flagship television.

As can be seen, the OLED950, after a professional calibration process, transforms into an absolutely phenomenal display that, without a shadow of a doubt, can be placed alongside the best televisions currently available in the world. This equipment only needed a professional touch to show its full potential and eliminate factory shortcomings. The minimal errors in reproduction in the Color Checker tests and the fidelity of the colour palette speak for themselves. We are dealing with an almost perfect device here. A true window to the world, offering image quality of the highest order.

The biggest praise for the QN990F should be given for its upscaling. The processor responsible for "lifting" classic television to 8K resolution does quite well. While watching material in 576p signal, we had no illusions that we would suddenly see a miracle in advertising style, where the image magically transforms into crystal-clear 8K. Nevertheless, the end result was surprisingly good; the image looked clean and sharp. It’s just a shame that the television, like most Samsung models, has an overscan issue, slightly cropping the edges of the screen from the left side.

When it comes to image processing, Samsung offers a feature called "noise reduction," which in theory should improve tonal transitions in older materials, where they are usually more visible. Unfortunately, we felt quite disappointed here. The feature performs poorly – it does not handle unwanted stripes and can introduce its own artifacts. On the plus side, the television does not remove film grain when using this feature, but in practice, that is a poor consolation since the noise reduction itself proves to be virtually useless.

Upscaling

In terms of the image upscaling, the proprietary P5 processor performs just as well as in most models from this manufacturer. Low-resolution content takes on a very soft and plastic character. This kind of presentation will certainly appeal to many people. However, if you prefer sharper contours, you can lightly enhance them with the appropriate slider in the television's menu. It's really hard to find fault in this aspect. The image simply looks very good and additionally there is no issue with the phenomenon of overscan.

Smoothing and Distortion Reduction

The function for smoothing tonal transitions performs somewhat worse. In the settings, we find an option called "Distortion Reduction." This allows for three levels of adjustment of the processor's interference. Unfortunately, the Minimum setting works poorly and the smoothing effects are negligible. The Medium level gives a decent result, but it also starts to smooth out actors' skin details. On the other hand, the Maximum setting works too aggressively. It definitely removes too much detail from the faces and background elements, and can even take away the film grain. To achieve the optimal effect, it's worth experimenting with these settings at home and adjusting them to your preference. It may seem that the Medium option is the best compromise here.

QN990F can comfortably be called one of the fastest televisions in the world. In 4K mode, it is capable of displaying images at a frequency of up to 240 Hz, which until now has been more associated with gaming monitors than with televisions in the living room. However, in everyday viewing, what matters more is how it handles the 8K signal at 120 Hz – and here it performs very well too. Motion remains smooth, and the television manages without a hitch even with the most demanding content. Additionally, there is the motion smoother, i.e. "Picture Clarity". Thanks to it, one can adjust the image to their own preferences – leaving a slightly cinematic judder or switching to maximum fluidity, which works exceptionally well, for example, in sports broadcasts.

The motion reproduction in the OLED950 model is virtually perfect. This is typical for screens of this type (OLED 120Hz+), as the panel shows no blurring at all. This allows us to enjoy perfect sharpness in practically any conditions. Much of this is thanks not only to the specifics of organic technology. Equally important work is done by the smoothing systems implemented by the manufacturer.

It must be said outright – the QN990F is one of those televisions that practically scream that they were designed with gamers in mind. Samsung has been developing its gaming solutions for years, but here we have a truly comprehensive set. Sure, it lacks Dolby Vision support in games, which is a downside that will always come up in discussions. However, aside from that, the list of features is impressively extensive. To begin with, we have the Game Bar – a handy menu that allows you to quickly check and change gaming-related settings. You can see, for example, the enabled VRR, frame rate, or aspect ratio settings. It’s like a little “dashboard,” making it unnecessary to dig deep into the menu to make adjustments. Speaking of VRR: yes, variable refresh rate is present here and works flawlessly. And there's ALLM, which automatically switches the television to game mode as soon as the console is powered on. These may seem like small details, but together they make using the QN990F simply comfortable and hassle-free.

However, the most impressive aspect is the number of ports. Four wireless HDMI 2.1 ports are already great news, as there is no need to choose whether to connect the console, the amplifier, or perhaps even a PC. There’s ample space for everything here. And if we add another micro HDMI (which we recommend connecting directly to the console), hidden in the casing, we practically have five inputs in full 2.1 standard. Let’s also add support for high refresh rates – 120 Hz at 8K and even 240 Hz at 4K – and we get a television that not only keeps up with the new consoles but also feels ready for consoles that are not yet available.

The OLED950 is nearly the perfect television for gamers. This is not only due to the unique atmosphere created by the Ambilight system during gameplay. The most important aspect here is the robust hardware support. You will find literally everything you should expect from a modern gaming display. The manufacturer has implemented two HDMI 2.1 ports with full bandwidth of 48 Gb/s. This gives us access to gaming in 4K resolution at 120 frames per second. Of course, support for VRR technology and the automatic ALLM game mode is also included. The device handles any HDR signal without difficulty, whether we are using Dolby Vision or the HGiG standard.

Access to all settings is available from one place thanks to the special Game Bar overlay. Although this interface may not be the most visually appealing on the market, it fully accomplishes its purpose. It displays all the important signal parameters and offers useful extras. Gamers can take advantage of the minimap zoom feature or add a permanent crosshair on the screen, which can be seen as a small aid in online competition. The contrast range adjustment also proves to be useful, as it allows you to brighten shadows and gain better visibility of enemies hidden in dark corners of the map.