Samsung QN85F vs Philips OLED811

Although the more than double number of dimming zones compared to its predecessor has not translated 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 nearly 1700–1800 nits, which is truly impressive in this Mini-LED class. The best part is that almost regardless of the scene being viewed, the HDR effect remains strong and vibrant. In four out of five test scenes, the brightness was around 1000 nits, a level that in most cases allows viewers to feel the true magic of this format. Of course, in scene number 4 from the movie Sicario 2, the limitations of Mini-LED technology become apparent – the brightness of the helicopter's spotlight drops to around 500 nits. It's not an outstanding result, but it's still much more acceptable than in last year's model. Samsung deserves applause, as the improvement in brightness in the QN85F is substantial compared to its predecessor. However, it's a pity about a certain trend seen in this year’s televisions – the manufacturer has worsened the color gamut coverage. Although the QN85F has a QLED panel, its result of around 90% DCI-P3 is average, and in the most demanding films, it can lead to less vibrant colors than in the predecessor. Despite this shortcoming, the overall HDR effect is at an excellent level and really makes a big impression in this class of devices.

Philips OLED811 uses the new generation WOLED EX panels, also found in models like the LG C6 and Samsung S90H. After calibration we measured around 1500 nits, which is a very good result for an OLED TV. You can see it clearly in movies and series. All kinds of light flashes have the right intensity, especially when they appear on a dark background. In such scenes the OLED811 can deliver truly impressive HDR. Of course, that doesn't mean you'll see that peak brightness in every shot. When the screen is filled with a large area of white or a big explosion, brightness falls to around 600 nits. That's still a good result, but those scenes no longer have the same punch as small, bright elements on a dark background. This is a known limitation of OLEDs, and the OLED811 is no exception.

Colors

Aside from HDR brightness, colors also matter, and Philips performs very well here too. It covers almost the entire DCI-P3 gamut, which contains most of the colors used in HDR movies and series. So you get rich reds and lush greens, and while watching it's hard to find major faults in this area. It looks a bit worse with the much wider BT.2020 gamut — its most saturated shades are already beyond the reach of this panel. Added to that is the issue of the white subpixel the WOLED panel uses to help boost brightness. With very bright colors you can see some "whitening": the color is bright but loses some of its saturation. In exactly these situations QD-OLED panels from Samsung Display have the advantage. In most movies and series, however, this won't be something that immediately stands out.

The Samsung QN85F offers several preset picture modes, but out of the box, the television starts in "Eco" mode. 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. Therefore, we conducted our tests in the best available mode, which is the Filmmaker mode. Its purpose is to faithfully reproduce what the directors saw while filming, and indeed, this setting performs best among all the factory options. However, this does not mean it is free of flaws.

Both in SDR and HDR, the QN85F strongly highlighted warm colors. This stemmed from a lack of white balance, with a noticeable absence of blue. Additionally, the picture sometimes appeared overexposed – both the gamma brightness characteristic and the EOTF curve indicated that the television has a tendency to blow out scenes. In SDR, the color reproduction errors (Delta E at levels of 4–5) were still acceptable, but in HDR, the inaccuracies became really significant 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.

The movie mode on the Philips OLED811 is sensibly configured right out of the box. Most color errors are minor, both in SDR and HDR, so you can sit down and watch without first adjusting the settings. There are no major inaccuracies that would immediately pull attention away from the film.

It's not perfect, though. The white balance shows a slight deficiency of red compared with green, so whites and grays can have a faint greenish tint. It's not a strong cast, but measurements clearly show it. There are also small brightness deviations in SDR: some areas of the picture are slightly lifted, and the deepest blacks aren't always rendered evenly. In HDR the TV tracks the reference much more closely, although in places it slightly pulls details out of the shadows. These are generally things to refine. The factory movie mode provides a good starting point, and calibration will show how much more you can get out of it.

After calibrating the movie mode, we managed to tame the colors in both modes to nearly perfection – most of them did not exceed an error value of 3, which is the limit of visibility to the human eye. The image became more natural, fuller, and at the same time devoid of the blooming that was noticeable right after taking the TV out of the box. This shows how much potential lies in 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 significant benefits of calibration, limitations of the panel itself still remain. 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 color distortions or subtly visible halo effects around bright objects. Nonetheless, the reception after calibration is really pleasant and shows how good a screen the QN85F can be if we just take a moment for the right settings.

After calibration the Philips OLED811 produces an image very close to the reference. We managed to even out the white balance and remove the subtle color cast visible in the factory settings. Errors in Color Checker measurements for SDR and HDR dropped to around 1 to 2, and many samples even fall below 1. That's a level at which it's hard to spot differences from the reference image with the naked eye. We also improved the gamma, and only in the brightest whites a slight brightening remains. In HDR the EOTF curve also stays close to the reference, although the TV still tends to slightly boost the brightness of small elements like stars or subtitles. That gives the image a bit of extra glow that shouldn't be there, but otherwise there's little to complain about. It was already good out of the box, and after calibration we managed to refine most of the remaining shortcomings.

Although the native tonal transitions on the QN85F perform excellently with 4K materials, we don't always deal with content in the highest resolution. That's when 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 works very efficiently. If visible color banding or other undesirable phenomena appear on the screen, for example in materials from YouTube, they can be easily smoothed out using the "noise reduction" function. Set to medium, it improves tonal transitions while not excessively blurring desired details. However, it's important to remember that – as with most Samsung televisions – this feature significantly affects the film grain. Therefore, during movie screenings, it's advisable to use it cautiously to maintain the natural character of the image.

The upscaling itself looks very good. Test materials in lower resolutions were displayed sharply and clearly, with a lot of detail. The only drawback remains the issue of overscan, which is cutting off the edges of the screen. In most situations, this is not noticeable, but with very old materials below HD quality, there may be instances where part of the image on the left side is slightly cropped.

The OLED811 handles lower-quality content reasonably well, though it's far from perfect. The "Artifact Reduction" feature helps smooth tonal transitions and on the low setting delivers a pretty good result. It doesn't remove banding between shades as effectively as similar solutions from some competitors, but at least it doesn't introduce new artifacts. That's a sensible setting for everyday viewing. Still, there's some disappointment, because the MediaTek Pentonic 800 chip used here can, in other manufacturers' implementations, deal more effectively with heavy compression even at similarly low settings. A lot therefore depends on how each manufacturer uses its capabilities. We have a few more reservations about the 4K upscaling itself. There is plenty of detail, but the overall image looks fairly soft. Edges are heavily smoothed, which robs the picture of some sharpness and clarity. You can partly correct that with the sharpness slider in the menu, though that will just emphasize outlines rather than recover detail. On the plus side, there is no overscan, so even with an SD signal the TV does not crop the edges of the picture.

Motion blur and fluidity of motion 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 panel. The additional hertz will primarily 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, since in practice, each of us would like the image to be as fluid 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. And here, the QN85F performs really well. In movies, you can easily adjust the character of the image thanks to the “picture clarity” function, where we find two adjustable sliders. Key for viewing sessions is the one responsible for reducing motion blur. Lower values give the image a more cinematic character with preserved “frame rate,” while higher values lead to a strong smoothing that resembles television theater.

In terms of motion handling, the OLED811 performs excellently. At 120 Hz, which is useful for console gaming and watching sports, the image stays clear and moving objects don’t leave noticeable trails. The fast response of OLED pixels helps here; you can see it clearly in the UFO test, even on dark backgrounds. There are also motion-smoothing controls. For movies you can adjust the strength of smoothing to your taste, ranging from preserving a cinematic feel to much smoother motion. A separate motion blur reduction control is useful for fast-paced content like live sports broadcasts.

The Samsung QN85F makes a great impression in terms of features for gamers. It has four HDMI 2.1 ports, so we can easily connect several devices at once. There is also variable refresh rate (VRR) to prevent screen tearing, as well as automatic game mode (ALLM), which allows the TV to switch to the appropriate settings automatically 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 supporting gamers. The Game Bar panel deserves praise as well. It's a quick glance at key parameters – from frame rate to refresh mode to shortcuts for picture settings. Instead of sifting through the entire menu, everything is at our fingertips, which turns out to be really convenient in practice. However, the most interesting addition is the Game Motion Plus feature. It's nothing more than motion smoothing, transferred into the gaming world. When enabled, the picture becomes smoother, sometimes it even looks as though we're getting several more frames, and importantly, the response delay does not increase enough to interfere with gameplay. This solution truly sets Samsung's 120Hz TVs apart from the competition.

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

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

OLED811 has almost everything you could expect from a gaming TV. It supports 120 Hz at Full HD, 1440p and 4K resolutions, and when connected to a PC can reach 165 Hz. It also has VRR, which helps avoid screen tearing with variable frame rates, and ALLM, which automatically switches to game mode. So you don't have to dig into the settings every time you power up your console.

HGiG also works correctly, so once you enable HDR on the console the TV doesn't apply its own brightness adjustments. There's also a Game Bar that lets you check signal parameters and quickly change settings useful while gaming. The list even includes Dolby Vision for games, but there's a significant catch, which you'll read about below.