Samsung QN85F vs LG OLED G6 (G64LW, G66LS)

Although more than twice the number of dimming zones compared to its predecessor did not translate into a spectacular jump in black levels and contrast, we definitely felt it in the HDR effect itself. The QN85F is up to 50% brighter than last year's model, making a huge impression in dynamic scenes. The peak brightness can reach almost 1700–1800 nits, which is truly impressive for Mini-LED in this class. The best part is that almost regardless of the scene being watched, the HDR effect remains strong and vibrant. In four out of five test scenes, brightness was maintained around 1000 nits, a level that in most cases allows the viewer to experience the true magic of this format. Of course, in scene number 4 from the film Sicario 2, the limitations of Mini-LED technology become apparent – the brightness of the helicopter’s small light drops to around 500 nits. This result is not stellar, but it is still much more acceptable than last year's model. Samsung therefore deserves applause, as the improvement in brightness in the QN85F is drastic compared to its predecessor. However, it is a shame about a certain trend visible in this year's televisions – the manufacturer has worsened the colour gamut coverage. Although the QN85F has a QLED panel, its score of around 90% DCI-P3 is average, and in the most demanding films, it can lead to less vibrant colours than its predecessor. Despite this shortcoming, the overall HDR effect stands at an excellent level and truly makes a big impression in this class of devices.

The LG G6 is currently one of the brightest OLEDs on the market. Its peak brightness reaches nearly 2500 nits, and what’s best – this has a direct impact on real film scenes. The television flawlessly extracts details in the bright areas of the image. And this is regardless of whether we are talking about very small points like stars in the sky or slightly larger elements on the screen. Naturally, with full-screen, uniformly white scenes, the brightness of the G6 decreases due to the panel protection system (ABL). However, in real, varied cinematic shots, this value still hovers around 2000 nits, which can be considered an outstanding result. The coverage of the colour palette also deserves praise. The new second-generation Tandem OLED panel only brought a cosmetic change but still an improvement. The coverage of the DCI-P3 palette reaches nearly 99.5%, whereas for the ultra-wide BT.2020, it is around 84%. These are very good results, although it’s worth remembering one thing: at extremely high brightness levels, the colour volume will be lower than in Samsung Display’s QD-OLED panels due to the use of a white sub-pixel (WOLED). However, in everyday content and most films, catching this difference will be very difficult.

Samsung QN85F offers several preset picture modes, but by default, when the television is turned on, it starts in "Eco" mode. And we could actually end the discussion here, because for such a model, using this setting makes no sense – the picture is washed out, unpleasant, and far from what we expect from a television of this class. We therefore carried out our tests in the best of the available modes, which is the Filmmaker mode. Its purpose is to faithfully reproduce what the directors saw during the filming of the movies, and indeed this is the setting that performs best among all factory options. However, this does not mean that it is without flaws.

Both in SDR and HDR, the QN85F quite strongly emphasised warm colours. This resulted from deficiencies in white balance, where there was a distinct lack of blue. Additionally, the picture was sometimes overexposed – as indicated by both the gamma brightness characteristic and the EOTF curve, which showed that the television tends to blow out scenes. In SDR, the colour reproduction errors (Delta E levels of 4-5) were still acceptable, but in HDR the discrepancies became quite large and clearly deviated from what the creators intended to show us. Fortunately, Samsung provides a wide range of calibration tools in its televisions, so – as always – we proceeded with professional calibration to see how much could be improved.

We tested the LG G6 in the best factory mode in terms of colour fidelity, namely FILMMAKER MODE. In the case of our test unit, this mode was quite well tuned straight out of the box. In SDR content, the only issue we could point out was the white balance, which tended to drift towards warmer tones. Consequently, the image could occasionally appear slightly yellowed; however, overall, this was not an bothersome problem. The G6 performed a bit worse with HDR content. There, we noted too much blue component in the white balance, which caused the image to take on cooler hues, resulting in fairly noticeable errors. As can be seen in our ColorChecker chart, the colours indeed drifted towards these cooler registers. Nevertheless, considering the factory settings, the television displayed a perfectly decent level. We do know, however, that OLED screens – particularly those from LG – respond excellently to professional calibration, which is why we immediately went ahead with it.

After calibrating the film mode, we managed to tame the colours in both modes to near perfection – most of them did not exceed an error value of 3, which is the threshold of perception by the human eye. The image became more natural, fuller, and at the same time free from bloom, which was noticeable right after taking the television out of the box. This shows the great potential of the QN85F and how well it responds to precise settings. However, this does not change the fact that certain technological barriers cannot be overcome. Despite the enormous benefits of calibration, there are still limitations of the panel itself. Although the number of dimming zones has doubled compared to its predecessor, the algorithms controlling the backlighting can manipulate brightness in their own way. Sometimes this leads to slight colour inaccuracies or gently visible halo effects around bright objects. Nevertheless, the experience after calibration is truly pleasant and demonstrates how good a screen the QN85F can be if we just take a moment for proper settings.

After professional calibration, we gained complete control over the panel, and we managed to align all parameters to nearly zero. We successfully calibrated the white balance perfectly, which eliminated the factory cool and warm tints from the screen. The effects are clear as day in the ColorChecker test – the average colour reproduction errors dropped below the critical value of 1-2. And what does that mean? PERFECT colours, without any distortion! However, as reviewers, we must point out here how the LG G6 arbitrarily manipulates brightness, for which the EOTF curve is responsible. When looking at the standard synthetic chart, it might seem that the line is quite straight. However, the situation changes when we turn on the measurement filter, which shows how the television interprets brightness in real, moving film scenes (EOTF in MOVIES). Then it becomes evident that some of the tiniest parts on the screen are slightly over-brightened by the algorithm. Of course, for the average viewer, such a deviation will be practically unnoticeable, but in the test of such an expensive screen, it is worth noting – especially since we are talking about a model that has huge aspirations to be named the best television of the year.

Although the native tonal transitions on the QN85F with 4K material perform excellently, we do not always deal with content in the highest resolution. At that point, it becomes crucial how the television handles upscaling and digital image processing. This process is managed by Samsung's proprietary processor – AI NQ4 Gen2. In practice, it operates very efficiently. If visible colour banding or other undesirable phenomena occur on the screen, for instance, in materials from YouTube, they can easily be smoothed out using the "noise reduction" feature. Set to a medium level, it improves tonal transitions without excessively blurring desired details. However, it is important to remember that – as with most Samsung televisions – this function heavily interferes with the film grain. Therefore, during cinematic screenings, it is wise to use it cautiously to avoid losing the natural character of the image.

The upscaling itself looks very good. Test materials in lower resolutions were displayed sharply and clearly, with a great deal of detail. The only downside remains the issue of overscan, which is the trimming of the edges of the screen. In most situations, this is not noticeable, but with very old materials below HD quality, there may be cases where a fragment of the image from the left side gets slightly cut off.

Whatever one may say about the G6’s problems with near-black signal, it must be fairly acknowledged that it handles heavily compressed material and lower resolution content exceptionally well. All unwanted, unsightly tonal transitions are effectively reduced here by the "Smooth Gradation" feature. At the "Low" setting, the algorithm works flawlessly – effectively masking the artefacts resulting from strong compression without destroying the sharpness and details in the frame. Higher levels of this function do indeed smooth the image further, but they start to blur the real elements of object texture, which is why we recommend keeping this slider at a low setting. As for the upscaling to 4K, the processor does an excellent job – edge sharpness and detail reconstruction are at the highest level, and in this regard, the G6 does not fall behind the world leaders at all.

Motion smoothing and fluidity in the QN85F is a topic worth discussing in more detail, as the television is equipped not with a standard 120 Hz panel, but with a 144 Hz one. The extra hertz will mainly be appreciated by PC gamers, but the mere presence of such an option can be seen as a nice addition and a sign of the times – it’s hard to complain about the trend towards faster panels, as in practice, each of us would prefer the image to be as smooth as possible. However, the most important thing is how the television handles typical 120 Hz refresh rates – in the case of consoles, sports, or films recorded at 24 or 30 frames per second. Here, the QN85F performs really well. In films, one can easily adjust the character of the image thanks to the "image clarity" function, where we find two adjustable sliders. Key for screenings is the one responsible for reducing judder. Lower values give the image a more cinematic character with preserved "frame rate," while higher values lead to strong smoothing reminiscent of television theatre.

LG G6 is an OLED television, so in the category of motion fluidity, it traditionally deserves the highest marks. The television supports very high refresh rates reaching up to 165 Hz in 4K resolution, but most importantly – on the screen, you will not notice any signs of blurring. The response time of the panel is almost instantaneous, ensuring that dynamic images remain perfectly sharp.

The Samsung QN85F makes a really great impression in terms of gaming features. It has four HDMI 2.1 ports, so we can easily connect multiple devices simultaneously. There is also variable refresh rate (VRR) which prevents screen tearing, as well as an automatic game mode (ALLM) that allows the television to switch to the appropriate settings when we start the console. Additionally, it supports refresh rates of up to 144 Hz – something that PC gamers will particularly appreciate, but the mere fact that such an option is available shows that Samsung is fully committed to supporting gamers. The Game Bar panel also deserves praise. It provides a quick overview of the most important parameters – from frame rate to refresh mode, even including shortcuts to picture settings. Instead of navigating through the entire menu, everything is at hand, which proves to be very convenient in practice. However, the most interesting addition is the Motion Plus gaming feature. It's effectively a motion smoother adapted for the gaming world. When enabled, the image becomes smoother, sometimes looking as if we've gained several extra frames, and importantly – the response time doesn’t increase enough to hinder gameplay. This solution truly sets Samsung's 120Hz televisions apart from competitors.

[UPDATE] We have updated our tests of Samsung televisions from the 2025 model year due to the release of software version 1131, which restored the crucial gaming feature HGiG.

The only major downside remains the lack of proper HGiG support. This is a standard responsible for correct tone mapping in HDR games, meaning that brightness and contrast are displayed as intended by the creators. Without HGiG, we have to adjust brightness manually, which doesn’t always yield perfect results. The feature was available in previous models, but it vanished from the QN85F after one of the updates. We hope that Samsung will quickly resolve this issue, and we will keep checking to see if it has been fixed.

The LG G6 is a true monster for gamers and one of the best-equipped televisions on the market in this regard. The manufacturer has not skimped on features, equipping this model with as many as four full HDMI 2.1 ports with a maximum bandwidth of 48 Gbps. This means that no matter which port you plug in your PlayStation 5, Xbox Series X, or powerful PC, you will get the absolute maximum performance from them.

The television supports a full set of gaming technologies: from VRR (Variable Refresh Rate) to AMD FreeSync Premium Pro, and even Nvidia G-Sync Compatible. On top of that, it offers remarkably low, nearly imperceptible input lag and an exceptionally well-functioning Game Optimizer panel, which allows you to monitor signal parameters in real time. Gaming on this screen, with the perfect black of OLED and impressive refresh rates, is pure pleasure.