Samsung QN990F vs LG QNED86A / QNED85A / QNED87A

The Samsung QN990F belongs to the bright televisions and this is immediately evident in the tests. In measurements, it achieved around 1300 nits, which in practice allows you to enjoy movies as their creators intended. Bright scenes have the right impact, lights shine, and the feeling is truly cinematic. In standard test patterns, sequences number 1, 3, and 5 performed the best – there the brightness remained around 800-1000 nits, and the image looked very natural. In more challenging segments, it could drop to about 600 nits, but still the level remained sufficient for details to be well visible. However, it should be added that with such highly contrasted shots, the halo effect returns – the same one we mentioned regarding the blacks. Bright elements can leave a glow on dark backgrounds, and this is immediately noticeable. Since we are dealing with a QLED, the color palette is expanded and the colors look impressive. The problem is that with such a flagship model, we expected better numbers. 91% coverage of DCI-P3 and about 67% BT.2020 are results that can be considered solid, but not outstanding. This results in a vibrant and attractive picture; however, competition in this and lower price segments can show even more.

Against the backdrop of contrast and black, the brightness of the QNED86A and the overall HDR effect performs much better. This is a television that can reach around 700 nits in the best conditions, so in terms of brightness alone, there is nothing to be ashamed of. As a result, scenes with strong lights, explosions, flashes, or bright parts of the landscape look clear and can make an impression. Interestingly, even in more challenging moments with small, contrasting elements on the screen, the television handles their backlighting well, and the details are quite visible. The problem resurfaces when there are a lot of dark tones. The lack of effective local dimming causes black to virtually disappear, and instead, we get a gray glow spreading across the entire screen. This kills the sense of depth and makes the image look flat, as if it lacks a cinematic quality. In bright animations or colorful family films, this won't be an issue because colors and bright light dominate there. But in horrors or productions set in darkness, these limitations are very palpable. As a consolation, it’s worth mentioning that the QNED86A is actually a QLED television with a PFS LED filter, which gives it very good coverage of wide color gamuts. Both the DCI-P3 palette and the wider BT.2020 perform really solid here. This ensures that colors in HDR films are saturated, vibrant, and have the right depth – even if the black itself disappoints, the colors can save the viewing experience and make the image look attractive.

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 was with white balance. Due to too little blue and also incorrect proportions 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 noticed issues with brightness management – the television had difficulty maintaining details in the smallest parts of the image, mainly due to the way it controls the backlight zones. Fortunately, Samsung offers a lot of room for adjustment when it comes to setting corrections. We know that with proper calibration, you can definitely get a lot more out of this screen.

We primarily tested the QNED86A in Filmmaker mode, which is designed to provide the most accurate picture. Unfortunately, right out of the box, there were quite a few shortcomings. The most noticeable issue was the poorly adjusted white balance – there was a lack of blue, causing the overall image to lean slightly yellow, and at times, even orange. An even bigger problem turned out to be the way the television manages brightness. Due to its technical limitations – namely, local dimming that only works along the edges of the screen – the QNED86A tends to over-brighten entire scenes. This is where the flattening effect we mentioned earlier comes from. Instead of distinct depth and contrast, we get something akin to "boosted brightness," which can strain the eye over time.

After performing calibration, we managed to bring the white balance into order and eliminate the previous deficiencies in blue tones. As a result, the image no longer appeared as if it had a slightly yellowish filter – whites are cleaner, and the overall presentation looks much more natural. We also managed to some extent to tame the brightness characteristic in HDR content. The television now handles maintaining details in blacks significantly better and does not lose them as much as before. However, when we look at the EOTF curve and how the QN990F reproduces brightness in films, it is evident that it still tends to emphasize details in dark scenes more strongly. This is a characteristic feature of Mini-LED technology, and more specifically, how it is managed by the QN990F, which is practically impossible to completely eliminate. Nevertheless, after calibration, the image looks much more natural, primarily due to the correct exposure of white light. The final effect is definitely more pleasant to receive and closer to what we expect from a flagship television.

What was saved in the QNED86A6A is undoubtedly the colors. After calibration, the white balance was set with great precision, resulting in deviations on the Colour Checker palette mostly not exceeding the threshold of visibility for the human eye. In other words – the colors finally looked natural, without strange yellow or orange tones that previously ruined the experience. Unfortunately, even the best calibration cannot bypass design limitations. The already mentioned very modest number of local dimming zones and their unfortunate placement made the analysis of the EOTF curve in films still show clear over-brightening of scenes. The image tended to flatten, lacking cinematic depth. Fortunately, this effect is not as noticeable in older productions or SDR content. There, calibration really does its job and allows taming the QNED in such a way that the image can be pleasing. However, the specifics of this design – especially the contrast issues – cannot be entirely overcome.

The QN990F deserves the highest praise for its upscaling. The processor responsible for "pulling up" classic TV to 8K resolution performs quite well. While watching content in a 576p signal, we had no illusions that we would suddenly see a marketing-style miracle where the image magically transforms into crystal-clear 8K. Nevertheless, the final effect was surprisingly good; the image looked clean and clear. It's just unfortunate that the TV, like most Samsung models, has an overscan issue, which slightly cuts off the edges of the screen on the left side.

Regarding image processing, Samsung provides a feature called "noise reduction," which in theory should improve tonal transitions in older materials, where they are usually more noticeable. Unfortunately, we felt quite disappointed here. The feature works poorly – it struggles with unwanted bands and can even introduce its own artifacts. On the plus side, the TV does not eliminate film grain when using this feature, but in practice, that's little consolation since the noise reduction itself proves to be practically useless.

If someone is worried about possible "steps" when connecting colors, there is a simple way in the QNED86A. Just turn on the feature called Smooth Gradation and set it to medium level. Then the TV really smooths out all those unwanted transitions – especially in older productions – and does it in such a way that the film grain doesn't disappear, nor do strange artifacts appear. In other words, you can use it without worry.

The upscaling itself also turns out quite well. Of course, there are no miracles here – with lower quality sources, you can observe characteristic jaggedness. Fortunately, there is a sharpness slider in the menu, and if someone prefers a more "softer" image, it can be quickly adjusted to their taste.

The QN990F can easily be called one of the fastest televisions in the world. In 4K mode, it can display 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 8K signals at 120 Hz – and it performs very well here too. Motion remains smooth, and the television manages without a hitch even with the most demanding content. Additionally, there is a motion smoother, called "Picture Clarity." With it, you can adjust the image to your own preferences – leave a slight cinematic stutter or switch to maximum smoothness, which works great, for instance, in sports broadcasts.

The QNED86A is equipped with a 120 Hz refresh rate panel, so right from the start, it's safe to say that it's suitable for both sports and gaming. And indeed, this is true – the image looks smooth, and motion blur is not very noticeable. IPS panels have always had some issues with this, and you can sometimes notice slight blurring here as well, especially in very dynamic scenes, but it's not something that ruins watching a match or a fast-paced game. For movie and sports fans, LG has added the traditional TruMotion smoother. In the menu, we have two sliders – one for movies (De-Judder), the other for sports (De-Blur). The first adds missing frames and allows you to adjust the character of motion – from raw, cinematic to more fluid, "theatrical." The second enhances sharpness during dynamic actions, so it's worth turning it up a bit if you're watching a lot of sports.

It must be said directly – the QN990F is one of those TVs that screams it was designed with gamers in mind. Samsung has been developing its gaming solutions for years, but here we have a true package. Sure, the lack of Dolby Vision support in games is a downside that will always come up in discussions. However, apart from that, the list of features is truly impressive. To start, we have Game Bar – a handy menu that allows you to quickly check and change game-related settings. You can see, for example, VRR is turned on, the frame rate, or the aspect ratio settings. It's like a small "dashboard," allowing you not to dig deep into the menu to make adjustments. Speaking of VRR: yes, variable refresh rate is present here and works flawlessly. Additionally, there's ALLM, which automatically switches the TV to game mode as soon as the console is turned on. These may seem like small details, but together they make using the QN990F simply convenient and hassle-free.

However, the number of ports makes the biggest impression. Four wireless HDMI 2.1 ports are already great news because you don't have to choose whether to connect the console, the receiver, or maybe even the PC. There's plenty of room here for everything. And if we add an additional micro HDMI (which we recommend connecting directly to consoles), hidden in the housing, we practically have five inputs in full 2.1 standard. Add to that support for high refresh rates – 120 Hz in 8K or even 240 Hz in 4K – and we get a TV that not only keeps up with the new consoles but also feels ready for consoles that are yet to come.

In terms of gaming, the LG QNED86A6A is a complete tool. It features four HDMI 2.1 ports with full bandwidth of 48 Gb/s, which means that whether you connect a PlayStation 5, Xbox Series X, or a powerful PC – everything will work at full 4K 120 Hz with support for all features. This is a big plus, as some competitors still have only two such ports, which can be problematic with a larger number of devices. It also has VRR, or variable refresh rate, which eliminates screen tearing, and ALLM, which automatically activates game mode when the console is turned on. There’s also Dolby Vision Gaming and a proper implementation of the HGiG format, so titles supporting these formats look more vivid and detailed. Added to all of this is the Game Optimizer – a kind of control center for the gamer. From this level, you can view image parameters in real-time, quickly change modes, activate additional features, or adjust image settings to your preferences. The LG QNED86A6A essentially has everything one can expect from a modern gaming television.