Samsung S85D vs Samsung S90F QD-OLED

Brightness is a key parameter in televisions, and the S85D Samsung model offers levels comparable to other OLEDs from a few years ago. Although it does not impress in this regard, its enormous advantage is the very competitive price. A peak brightness of 600 nits ensures good image quality in HDR conditions, giving users a taste of cinematic experiences in the comfort of their home. However, as with many budget OLED models, the biggest issue is very bright, full-screen scenes – in such moments, like the final scene from the film “The Meg,” the television can lose even half of its brightness, which is noticeable compared to more expensive OLED models. Despite this, the television offers impressive coverage of the DCI-P3 colour palette at 99%, allowing for vibrant and accurate colours to be displayed.

The biggest difference between the 65-inch S90F and the other versions is brightness. The QD-OLED panel can reach up to 1700 nits in laboratory tests, which is over 500 nits more than the variant with a WOLED matrix. This translates to a decidedly stronger and more engaging HDR effect. In most scenes, bright parts of the image look fantastic, and we must admit that we were positively surprised, as we expected results more similar to the WOLED version, but we got an effect that makes a great impression even in films. Just like with every OLED, there are moments when the panel needs to limit its brightness a bit. This mainly refers to full-screen, very demanding scenes – for example, in the last test frame from the film "The Meg," the brightness drops to around 800 nits. However, it is hard to consider this a disadvantage, as it is still an excellent result, unprecedented in OLED televisions in this price range. Everything suggests that the 65-inch S90F could be one of the best choices this year for those looking for a strong OLED at a reasonable price. Another advantage of the QD-OLED matrix in HDR content is its colour gamut coverage. Thanks to quantum dots, the television achieves almost a full 100% of the DCI-P3 colour space and nearly 90% of the BT.2020 colour space. These values place it alongside much more expensive models and make it exceptional in its class.

The Filmmaker mode on the Samsung S85D does offer quite good factory settings, but it is not free from errors, particularly evident in colour reproduction. The white balance chart for HD and HDR content shows clear issues – both red and blue colours are significantly weakened, leading to a dominance of green. The result is an unnatural yellowish hue that can affect the perception of realistic scenes. The Color Checker test clearly shows that the colour samples deviate from expected values – for HD material, the colours can be overly saturated, with a noticeable shift towards green, which is also evident in the white balance chart. Conversely, for 4K HDR content, the colours appear too dull, lacking depth, making the image less appealing and natural. This effect is particularly noticeable in delicate scenes where colour precision plays a key role, which can be disappointing for discerning viewers who expect faithful reproduction of details and colour intensity.

As for brightness, the gamma chart for HD content looks quite good; however, there is a noticeable jump at the end, exceeding a value of 2.4. While this is not a major issue in most scenes, in more demanding sequences it may affect the clarity of bright details. For 4K content, the EOTF curve, responsible for delivering brightness, turns out to be problematic. The initial part of the chart shows a small jump. This phenomenon can result in excessive boosting of brightness in the brightest areas of the image, leading to loss of detail in very bright scenes.

Although Samsung S85D offers quite decent factory settings, especially in Filmmaker mode, it is worth considering manual adjustment of settings to improve some imperfections, particularly in colour reproduction.

Samsung S90F, like most modern televisions, offers several picture modes, but in line with our tradition, we tested it in the most important one, which is Filmmaker. This setting makes the image look much more natural than in the default, often overly saturated modes. It is neither excessively vivid nor artificially subdued – just closer to what one should actually see. However, this does not mean it is perfect. The S90F had noticeable shortcomings in white balance, mainly in the blue range, which gave a slightly yellowish filter effect on most scenes. One might argue that it looks more "filmic" because it is warmer, but let’s not kid ourselves – George Lucas didn't shoot Star Wars in sepia 😉 (a comparison with the scene can be found, as always, below). In HDR materials, there was also an issue with brightness management. The EOTF curve clearly showed that the television brightens the picture more than it should, leading to some effects appearing too intense and deviating from the reference. Fortunately, a large part of these shortcomings can be eliminated through professional calibration – we will discuss the effects of this procedure further on in the test.

After calibration, the Filmmaker mode on the Samsung S85D truly impressed. The white balance, regardless of the type of content, has significantly improved, resulting in more natural colours. The Color Checker test shows that colour reproduction errors are now minimal and rarely exceed acceptable values, which indicates accurate colour rendering. The factory colour reproduction left much to be desired, but the situation has now significantly improved – the colours are natural, precise, and look as if they were rendered exactly according to the creators' intentions. This is a huge step forward compared to previous generations, where colours were often distorted or too intense.

The brightness characteristics also benefited from the calibration – it is now more vivid and precise. The gamma, although fairly good previously, has become even more stable, providing a deeper, more natural image. The EOTF curve has been aligned, allowing details in dark areas to be more visible and the contrast more balanced. With all these improvements, the television delivers an image close to reference quality, greatly enhancing the enjoyment of watching films and HDR content.

Calibration quickly revealed that the S90F has a significant margin of capability. The image in SDR immediately gained a natural quality – classic films no longer looked as if someone had applied a yellowish filter to them, and the colours regained their proper character. It is a return to the atmosphere of the original, without the impression that someone tried to "age" it forcefully. In HDR content, the difference was even more pronounced. The EOTF curve was managed almost to a reference level, and any deviations are so subtle that most viewers won't even notice them. In practice, the S90F shows an image very close to perfection after calibration. Compared to the WOLED version, it performs even better – mainly due to the wider colour gamut coverage, which makes the colours appear fuller and more intense.

Samsung S85D performs excellently in scaling images and smoothing tonal transitions. Like in other Samsung models, the television offers three noise reduction modes: off, standard, and high. Although it effectively improves gradations, it unfortunately also removes film grain, which many viewers desire to give the image a cinematic character. This grain often adds authenticity and a certain rawness to films, which is lost after smoothing. Removing the grain can make the image look too sterile and smooth, which detracts from the charm of the original film material. When it comes to scaling images, the Samsung S85D handles lower resolution content beautifully – the model in the picture and the branches in the background were displayed correctly, with no major issues with edge aliasing. The only noticeable drawback is the presence of overscan, which can sometimes cut off parts of the image, which may not please everyone.

The S90F performs really well here, although there are some comments that recur with most Samsung televisions. The noise reduction feature can effectively smooth out unwanted colour transitions in poorer materials, such as television or YouTube, making them simply look better. However, it should be noted that it operates quite aggressively and can also soften elements we wouldn't want to touch, like facial details. Therefore, if we want to use it, it’s best to set it to 'medium' and be aware of the compromise it entails. The upscaling itself is at a high level – low-quality materials are upscaled towards a 4K-like image. The only caveat is that the S90F can still struggle with so-called overscan, meaning it slightly trims edges with very poor materials like 576p and lower.

As befits an OLED television, Samsung S85D offers excellent motion fluidity. Equipped with a 120 Hz panel and fast response time, the television provides very smooth playback of dynamic scenes without visible ghosting. For movie enthusiasts, there is a feature called "Image Clarity Settings," which allows adjusting the fluidity of the image to individual preferences on a 10-point scale. Motion blur reduction enhances the sharpness of rapidly moving objects, while motion smoothing smooths out movement, eliminating the "judder" effect. This way, every user can set the appropriate level of clarity that best suits their taste, from a more cinematic effect to sharper, smoother movements.

S90F is an OLED with a refresh rate of 144 Hz, but in practice, it primarily indicates how it performs at 120 Hz, as this frequency is most significant when watching sports. The QD-OLED panel is no different in this regard from WOLED panels – the response of the pixels is nearly instantaneous, so motion is rendered with surgical precision. The result is predictable. The image is virtually devoid of motion blur, making gaming on consoles, matches, or other sports broadcasts incredibly enjoyable on the S90F.

Fans of films and series have not been overlooked either. Like every Samsung television with a refresh rate of 120 Hz and above, the S90F features a proprietary motion smoothing technology called "Image Clarity." Here, we find two sliders – blur reduction and judder reduction – which allow for improved fluidity of materials recorded at 24 frames and tailoring the effect to personal preferences.

Samsung S85D OLED is an excellent choice for gamers, thanks to its many modern features that facilitate and enhance gameplay. The television has four full-bandwidth HDMI 2.1 ports, allowing you to connect the latest consoles without worrying about image quality or frame rate limitations. This means support for 4K resolution at 120 Hz, which is ideal for modern titles. Additionally, the Samsung S85D has an ALLM (Auto Low Latency Mode) feature that automatically activates low latency mode when it detects a gaming device. This means you don’t have to manually switch settings – the television takes care of ensuring a fast response time, which is crucial in games where every second counts.

The VRR (Variable Refresh Rate) feature and G-Sync support are additional elements that make gameplay smoother. VRR adjusts the refresh rate to the number of frames generated by the console or computer, eliminating screen tearing and stuttering. This is particularly useful in dynamic games where the frame rate can fluctuate. Auto Motion Plus Game is a feature that Samsung has introduced with gamers in mind, and it is worth appreciating. With it, the image in games becomes smoother – 30 frames per second look like 45, and 60 Hz gains in fluidity, creating an effect close to 90 Hz. At the same time, there is no significant increase in input lag, which remains below 25 ms, making this feature stand out among others available on the market. Gamers can enjoy a smoother image without worrying about a decline in responsiveness.

Samsung has also ensured something extra – the television has a built-in Xbox Game Pass app, which means you can play in the cloud without needing to own a console. This is a great solution for those who want to enjoy gaming without investing in additional hardware. All you need is internet access, and you have a huge library of games at your fingertips. This makes Samsung S85D a fantastic choice for both casual gamers and those who are more advanced.

The S90F is a television that truly brings a lot of joy when gaming. To start, we have four full-fledged HDMI 2.1 ports, which means you can connect all consoles and PCs without worrying about which device has priority. This is a convenient and practical solution that is by no means a given with other manufacturers. Additionally, there are key features such as automatic game mode (ALLM), which automatically switches the screen to low-latency settings, and VRR frame synchronization that operates in a wide range from 48 to 144 Hz. As a result, the picture remains smooth regardless of whether we're playing fast-paced online shooters or more leisurely narrative titles. The Game Bar also deserves a mention – a panel that allows quick access to several useful additions. For example, you can enable an additional crosshair in the centre of the screen, enlarge the minimap, or, in the case of PC, change the aspect ratio. Lastly, there is also the unique Game Motion Plus mode from Samsung. Its purpose is to smooth out older or poorly optimized titles, and it actually works pretty well. Thanks to this mode, even less polished games can look better and provide a more enjoyable gaming experience than on other televisions that theoretically offer the same technical specifications.