SAMSUNG S95F (TANDEM OLED 83") vs Hisense U7S / U77SE

The Samsung S95F in the 83-inch variant with a Tandem OLED panel also manages to enchant with HDR effects. In test film scenes, such as "Life of Pi" or "Sicario 2", where smaller light points dominate – stars in the night sky, the glow of the moon or headlights – the television effortlessly achieves brightness values exceeding 2000 nits. This is a result that not long ago seemed unattainable for OLEDs and positions this model alongside the best Mini-LED constructions.

The limitations of organic panels only reveal themselves in full-screen scenes filled entirely with white. In the case of this model, for instance in the final scene from the film The Meg, brightness drops to around 1000 nits – a bit lower than in the smaller QD-OLED variants, where the result hovered around 1400 nits. Nevertheless, we are still talking about a remarkable result, unprecedented in OLED televisions of this size. The colour reproduction is equally impressive. The new Tandem OLED panel virtually catches up with QD-OLED televisions, offering excellent coverage of a wide colour gamut. The results are slightly weaker than with QD-OLED, but in practice, they still provide an image whose intensity and naturalness of colours are hard to compare with any other television.

The Hisense U7S has considerable potential for HDR display, but it cannot exploit that potential in every scene. On a test pattern it reaches around 1,100 nits, so the backlight itself is very strong. In our brighter film scenes we measured about 640 to 745 nits. That is still plenty for the sun or bright highlights to have a clear bloom and to show an advantage over SDR material. When the TV needs to brighten a larger portion of the image, it handles it fairly well.

The problem appears with small highlights on a dark background. Each of the 192 zones covers an area much larger than a tiny point on the screen. If the TV were to light that whole zone strongly, it would also brighten the area around the highlight. Hisense tries to avoid that and dims the entire zone. This makes blacks look better, but a small bright object that should attract the eye also loses intensity. That is why in two more demanding scenes we recorded only 297 and 154 nits. The difference is large: in one shot HDR can impress, and in the next small highlights are noticeably muted. The U7S therefore prioritises preserving deep blacks, even at the expense of bright details. With that number of zones it is an understandable compromise, but worth bearing in mind — the peak 1,100 nits tells us about the backlight’s capability, not how brightly the TV will show every element of a film.

Colours

Hisense describes the U7S as ULED, but that is a marketing name, and it is a PFS phosphor backlight that expands the colour palette here. In our measurements the TV covered about 91% of the DCI-P3 colour space and 71% of BT.2020. Those are good results, though they fall short of the best screens on the market. The largest shortfall is in green — the TV does not even reach the DCI-P3 boundary here, so the most intense shades will be less saturated than they should be. Most colours in HDR films and series still look suitably vibrant. A positive is the repeatability of the results. Gamut coverage on test patterns and in film scenes is practically identical.

The best picture mode straight out of the box is undoubtedly Filmmaker Mode. This is a mode that has been available in Samsung televisions for several years and is intended to reproduce the image as faithfully as possible to the creators' vision. In SDR material, it performs reasonably well, although not without faults. The image is slightly subdued, and the white balance tends to shift towards red and blue, resulting in a slight pinkish tint on the screen. The average colour errors hover around a value of ΔE 3–4, which is at the limit of what most people can discern with the naked eye.

Much more pronounced are the limitations when it comes to HDR content. Here, a slight excess of blue in the white balance is not such a big problem – the real obstacle is the way the television manages brightness. In many scenes, the image appeared as if it had been overexposed, and details in the blacks could completely disappear. The final effect did not reflect what the hardware of this class is capable of and led to significant colour errors. It's hard to understand why such a factory characteristic was chosen, as the HDR reception in this version was definitely not what it should have been.

Out-of-the-box colours on the Hisense U7S are decent, but there are a few areas to improve. In SDR there is a red bias in the white balance, which makes the picture too warm and, in places, slightly pink. You can notice this on faces and on bright, neutral surfaces. The gamma also runs below the target, so the TV brightens the image, particularly in darker areas. That makes shadow detail easier to see, but the scene loses some of its depth.

In HDR the white balance is somewhat more even, but not entirely neutral, with a shortage of blue in the mid-tones and a lack of red in the brightest parts. A bigger issue is how brightness is rendered. The EOTF curve shows a large portion of the mid-tones being lifted, causing the picture to look brighter than the source intends. Color Checker measurements are also weaker than in SDR: many errors are around 3 to 4, and some reach as high as 8. Colours can therefore look attractive, but they are not always faithful to what we should see. There is room for improvement here and we will see how much can be corrected through calibration.

After calibration, the S95F shows what it is truly capable of. The white balance has been corrected and minor inaccuracies adjusted, resulting in an almost exemplary image for SDR content. The colour differences have dropped below the level that the human eye can perceive – looking at the screen gives a sense of complete naturalness and colour coherence.

In HDR, the improvement is equally noticeable. The TV performs much better with brightness, eliminating the issue of "blowing out" the entire frame. Bright scenes are more controlled, and blacks retain more detail, although there can still be a slight brightening of the image as a whole. However, this does not change the fact that after calibration, the S95F delivers an image that can comfortably be called one of the best on the market – regardless of whether we are watching movies in SDR or spectacular productions in HDR.

Calibration of the Hisense U7S brought the biggest improvements with SDR material. We managed to even out the white balance, so the previous warm tint has gone and whites and greys now look neutral. Gamma is also now very close to the reference, and the TV no longer brightens the picture unnecessarily, so darker scenes have regained depth. Color Checker measurements confirm the improvement: most errors are below 2. That means the picture is very well set up for watching regular TV and SDR films. It wasn't as smooth in HDR. There is no effective way to correct the EOTF curve, so the TV still interprets a film's brightness somewhat on its own. It brightens parts of the picture and can dim the brightest elements depending on the scene and the behaviour of the local dimming. Calibration could not eliminate this. This is also reflected in the Color Checker results, where many errors remain around 3–4 and a few exceed 7. So the result in SDR is really very good, but in HDR we must accept that the TV adds its own interpretation of brightness to the image.

In the Samsung S95F model, there is a noise reduction feature aimed at improving the smoothness of tonal transitions. Its operation can hardly be called ineffective – on the contrary, it can overly interfere with the image. Older films or materials of poorer quality, such as those from YouTube, acquire a soft, smoothed character thanks to it, reminiscent of a painting effect. The problem is that along with the noise, the natural film grain disappears, stripping the image of its cinematic character. Fortunately, the feature does not blur significant details, so its use is more a matter of taste. If someone prefers a slightly polished and smooth image, it is worth enabling, but in our opinion, the most sensible setting is “Standard”.

A better impression is left by the upscaling. The S95F efficiently enhances the quality of lower resolution content – even 576p video looks quite good, although minor artifacts in the form of blockiness can be noticed. Overall, the effect is very solid, although when compared to competitors – such as the Sony Bravia 8 (II) or LG G5 – it is noticeable that those models can extract a bit more from the image. However, it is worth remembering one inconvenience: with older films and photos, there is an overscan issue that causes a slight cutting off of the left edge of the image.

The handling of lower-quality material is fairly mediocre on the Hisense U7S. The Pentonic 700 chipset used here does not cope particularly well with strong compression artefacts. The menu includes a "Smooth and Gradient Image" function, but its performance leaves much to be desired. At the low setting tonal transitions show little improvement, although at least the image does not suffer. The medium and high settings still do not remove obvious banding between shades, and they begin to blur details; in our test material even parts of characters' faces disappeared. Interestingly, film grain remains untouched at every level. If you do use this feature, stick to the low setting. Its current behaviour needs refinement, but that is mainly down to the chipset used here.

Upscaling to 4K performs much better. Lower-resolution content gains in legibility, edges are well reproduced, and fine elements look sharp. That does not mean it recovers details that were never in the recording, but the TV makes good use of what it receives from the source. Another plus is that it does not crop the image edges, even with an SD signal.

In the case of the 83-inch S95F with a Tandem OLED panel, the fluidity of motion also makes a huge impression. The panel, with a native resolution of 4K, offers a refresh rate of 165 Hz, and this combined with organic technology makes games and sports look superb. Additionally, the manufacturer has added a film smoother and a motion blur reduction system, allowing each viewer to adjust the image to their own preferences – whether it's a more "frame-rate" cinematic effect or a smooth, almost theatrical spectacle.

Motion handling on the Hisense U7S is decent thanks to the 144 Hz refresh rate. For films there is also a motion smoother with adjustable judder and blur reduction. You can therefore keep a more cinematic motion or increase smoothness if jerky camera pans bother you. The high refresh rate is also useful for sports and gaming, but unfortunately it does not solve the panel's biggest problem.

That problem is pixel response time. Fast-moving objects leave long, clearly visible trails, as our UFO test shows. It looks worst on dark backgrounds, where the trail behind the object is particularly pronounced. So motion can be smooth, but the moving object itself loses sharpness, and that difference on the U7S is fairly easy to notice.

Low smearing and phenomenal motion fluidity, which are the hallmarks of OLED displays, are just the warm-up. The Samsung S95F has been designed with gamers in mind – and this is evident at every turn. Four HDMI 2.1 ports with a bandwidth of 40 Gb/s may sound like a compromise on paper, but in practice, neither consoles nor PCs will experience the slightest limitation here. On board, there is a full set of gaming features: Variable Refresh Rate (VRR), Auto Low Latency Mode (ALLM), as well as a flawlessly implemented HGiG standard that allows you to enjoy HDR exactly as the creators intended. All of this is complemented by Game Bar – an intuitive command centre where you can check and adjust the most important settings in seconds.

Particular attention should also be paid to Game Motion Plus, Samsung's proprietary motion smoothing technology. It can add extra fluidity to animations, which can be a lifesaver in games running at 60 frames per second, where stability doesn't always hold up. Indeed, support for Dolby Vision in games is lacking, but it’s hard to consider this a serious flaw – the manufacturer compensates for this gap with other solutions. The S95F is one of the absolute favourites for the title of the best gaming television on today's market.

The Hisense U7S has a lot to offer gamers. You get two HDMI 2.1 ports and support for 120 Hz at Full HD, 1440p, and 4K, so modern consoles’ capabilities are well used. When connected to a PC you can use 144 Hz at 4K or switch the resolution to Full HD and run 240 Hz. So there’s a wide choice, although it’s worth remembering the motion smearing mentioned earlier, which the high refresh rate does not eliminate. VRR and ALLM are also present. The first helps prevent tearing when frame rates in a game change. The second automatically switches the TV into game mode, so you don’t have to dig through the menu each time. VRR works from 48 to 240 Hz, with the highest refresh rate available in Full HD. Xbox users can also play in Dolby Vision, including at 120 Hz. Importantly, this format does not introduce significant input lag here. The Game Bar also looks very good. It’s easy to read, visually appealing, and lets you quickly check what signal the TV is receiving. There are also handy gaming settings at your fingertips, including shadow brightening. If it’s hard to spot an opponent in a dark game, you can improve visibility without digging through the entire menu.

Our biggest complaints concern HGiG. Hisense continues to do its own tone mapping, which makes setting HDR on the console confusing. You adjust a checkerboard test pattern and the TV continuously adapts how it looks. As a result, the moment the pattern disappears does not correctly indicate the screen’s brightness limit, and it’s easy to set the value too high. For this model it’s better to set the target HDR peak brightness on the console to about 900 to 1000 nits, rather than relying on the configurator.