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

The Samsung S95F in the 83-inch variant with a Tandem OLED panel also enchants with its HDR effects. In test movie 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 TV easily achieves brightness levels surpassing 2000 nits. This is a result that not long ago seemed unattainable for OLEDs and places this model in the same category as the best Mini-LED constructions.

The limitations of organic panels only emerge in full-screen scenes completely filled with white. In the case of this model, for example, in the final scene of the film The Meg, brightness drops to around 1000 nits – slightly lower than in the smaller QD-OLED variants, where the result hovered around 1400 nits. Nevertheless, we are still talking about an outstanding result, unprecedented in OLED TVs of this size. The colour reproduction is equally impressive. The new Tandem OLED panel nearly catches up to QD-OLED TVs, offering excellent coverage of a wide colour gamut. The results are slightly weaker than those of 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 HDR potential, but it can’t make full use of it in every scene. On a test pattern it reaches about 1100 nits, so the backlight is genuinely strong. In our brighter film scenes we measured around 640 to 745 nits. That’s still enough for the sun or bright highlights to have a distinct bloom and to show an advantage over SDR material. When the TV needs to light a larger portion of the image, it handles it quite well.

The problem appears with small lights on a dark background. Each of the 192 zones covers an area considerably larger than a tiny point on the screen. If the TV were to drive such a zone strongly, it would brighten the surrounding area along with the light. Hisense tries to avoid that and dims the whole zone. Blacks look better as a result, but a small bright object that should draw the eye also loses intensity. That’s why in two tougher 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 keeping deep blacks, even at the expense of bright details. With this number of zones it’s an understandable compromise, but it’s worth remembering that the peak 1100 nits tells us about the backlight’s capability, not how brightly the TV will show every element of a film.

Colours

Hisense markets the U7S as ULED, but that’s a marketing name; the wider colour gamut here is achieved by a PFS phosphor backlight. In our measurements the TV covered about 91% of the DCI-P3 space and 71% of BT.2020. Those are good results, though a little short of the best screens on the market. The biggest shortfall is in green — the TV doesn’t even reach the DCI-P3 boundary there, so the most intense green hues will be less saturated than they should be. Most colours in HDR films and series still look suitably vivid, however. A positive is the repeatability of the results: gamut coverage on test patterns and in film scenes is practically identical.

The best picture mode right out of the box is undoubtedly Filmmaker Mode. This mode has been present 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, though not without flaws. The image is slightly dimmed, and the white balance tends to shift towards red and blue, resulting in a slight pinkish tint on the screen. Average colour errors hover around values of ΔE 3–4, which is on the borderline of what most people can detect with the naked eye.

The limitations are much more apparent with HDR content. Here, a slight excess of blue in the white balance isn't such a big issue – the real obstacle is how the television manages brightness. In many scenes, the image looked as if it had been blown out, and details in the blacks could completely vanish. The final effect didn't do justice to what such a device is capable of, leading to significant colour inaccuracies. It's hard to understand why such a factory characteristic was chosen, as the perception of HDR in this rendition was definitely not what it should have been.

Factory colours on the Hisense U7S are decent, but there are a few things to fix. In SDR the white balance favours red, so the image looks too warm, in places with a slightly pink tint. You can see this on faces and bright, neutral surfaces. Gamma also runs below the target, so the TV brightens the image, especially in darker areas. That makes it easier to see shadow detail, but the scene loses some of its depth.

In HDR the white balance is a bit more even, but not completely neutral, with midtones lacking blue and the brightest parts lacking red. A bigger problem is the way brightness is reproduced. The EOTF curve shows that a large portion of the midtones is boosted, making the image appear brighter than the source material intends. Color Checker measurements also fare worse than in SDR: many errors are around 3 to 4, and individual ones reach as high as 8. Colours can therefore look attractive, but they're not always faithful to what we should be seeing. There’s room for improvement and we’ll see how much can be corrected with calibration.

After calibration, the S95F shows what it can really do. The white balance has been straightened out, and minor inaccuracies have been corrected, making the image in SDR content look nearly exemplary. Colour differences have fallen below the level that the human eye can detect – looking at the screen, one just gets the impression of complete naturalness and harmony of colours.

In HDR, the improvement is equally noticeable. The TV handles brightness much better, and there’s no longer the 'blowing out' of the entire frame. Bright scenes are more controlled, and blacks retain more detail, though sometimes a slight brightening of the overall image can still be noticed. However, this doesn’t change the fact that after calibration, the S95F delivers an image that can confidently be called one of the best on the market – regardless of whether we’re watching movies in SDR or spectacular productions in HDR.

Calibrating the Hisense U7S did the most for SDR content. We managed to even out the white balance, so the earlier warm tint is gone and whites and greys look neutral. Gamma now sits very close to the reference, so the TV no longer brightens the image unnecessarily and darker scenes have regained depth. Color Checker measurements confirm the improvement: most errors are below 2. For watching regular TV and SDR films, this delivers a really well calibrated picture. Calibration in HDR wasn’t as smooth. The TV lacks an effective way to correct the EOTF curve, so Hisense still interprets the film’s brightness a bit on its own. It brightens parts of the image and, depending on the scene and local dimming, can tone down the brightest elements. That couldn’t be eliminated by calibration. This also shows up in the Color Checker results, where many errors remain around 3–4 and some exceed 7. In SDR the result is therefore very good, but in HDR we have to accept that the TV adds its own interpretation of brightness to the image.

The Samsung S95F model features noise reduction, aimed at improving the fluidity of tonal transitions. Its effectiveness is difficult to call ineffective – on the contrary, it can excessively interfere with the image. Older films or materials of lower quality, such as those from YouTube, take on a soft, smoothed character reminiscent of a painting effect thanks to this feature. The problem is that along with the noise, the natural film grain, which gives the image a cinematic quality, also disappears. Fortunately, the feature does not blur significant details, so its use is more a matter of preference. If someone prefers a slightly polished and smooth image, it’s worth turning it on, but in our opinion, the most sensible setting is “Standard”.

Upscaling leaves a better impression. The S95F efficiently enhances the quality of lower resolution content – even 576p videos look quite good, although minor artifacts in the form of blockiness can be noticed. Overall, the effect is very solid, although when compared to the competition – 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, one inconvenience to remember is that in the case of older films and photos, there is a problem with overscan, which causes a slight trimming of the left edge of the image.

The processing of lower-quality material in the Hisense U7S is fairly average. The Pentonic 700 chipset used here doesn't cope particularly well with the effects of heavy compression. There's a "Smooth and Gradient Picture" function in the menu, but its performance leaves a lot to be desired. At the low setting it's hard to see any improvement in tonal transitions, though at least the picture doesn't suffer. Medium and high settings still don't remove visible banding between tones and begin to blur details; in our clips parts of characters' faces even vanished. Interestingly, film grain remains untouched at every level. If you do use this function, stick to the low setting. Its current performance needs refinement, but that's mainly down to the processor used here.

Upscaling to 4K performs much better. Lower-resolution content gains clarity, edges are well reproduced and fine details look sharp. That doesn't mean the TV can recover details that weren't in the recording, but it makes good use of what's provided by the source. Another plus is the lack of edge cropping, 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 in native 4K resolution offers a refresh rate of 165 Hz, and this combined with organic technology makes games and sport look fantastic. Additionally, the manufacturer has added a motion smoother and a motion blur reduction system, allowing each viewer to customise the picture to their own preferences – whether a more 'choppy', cinematic effect or a smooth, almost theatrical spectacle.

Motion handling on the Hisense U7S is decent thanks to its 144 Hz refresh rate. For films there's also a motion smoothing option with adjustable judder and blur reduction. You can keep a more cinematic feel to motion or increase smoothness if choppy camera pans bother you. High refresh is also useful for sport and gaming, but unfortunately it doesn't solve the panel's biggest problem.

The issue is pixel response time. Fast-moving objects leave long, distinct trails, as our UFO test shows. It's worst on dark backgrounds, where the trail is particularly pronounced. So motion can be smooth, but the moving object loses sharpness, and that difference on the U7S is fairly easy to spot.

Low motion blur and phenomenal motion fluidity, hallmarks of the OLED panel, 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 feel the slightest limitation here. Onboard is a full set of gaming features: variable refresh rate VRR, automatic game mode ALLM, and an excellently implemented HGiG standard, which allows you to enjoy HDR exactly as the creators intended. All this is complemented by Game Bar – an intuitive command centre where you can check and adjust the most important settings in seconds.

Particularly noteworthy is Game Motion Plus, Samsung's proprietary motion smoother. It can add additional fluidity to animations, which can be a lifesaver in games running at 60 frames, where stability doesn't always hold up. Yes, there's no support for Dolby Vision in games, 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 plenty to offer gamers. You get two HDMI 2.1 ports and support for 120 Hz in Full HD, 1440p and 4K, so modern consoles’ capabilities are well utilised. 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 lot of choice, although it’s worth remembering the motion smearing mentioned earlier, which the high refresh rate doesn’t eliminate. VRR and ALLM are present as well. VRR helps keep the picture tear-free when a game’s frame rate changes. ALLM automatically switches the TV into game mode, so you don’t have to go into 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 at 120 Hz. Importantly, that format does not cause significant input lag here. The Game Bar also looks great. It’s clear and attractive, and lets you quickly check what signal the TV is receiving. Handy gaming settings are close to hand too, including shadow brightening. If it’s hard to spot an opponent in a dark game, you can improve visibility without digging through the whole menu.

Our biggest complaint is HGiG. Hisense keeps doing its own tone mapping, which makes setting up HDR on the console confusing. You adjust the checkerboard pattern, and the TV continually alters its appearance. As a result, the point at which the pattern disappears does not correctly indicate the display’s brightness limit, and it’s easy to set the value too high. For this model it’s better to set the target HDR brightness on the console to around 900 to 1000 nits, rather than rely on the configurator.