Dreame Q100 vs Samsung R85H / R86H

The Dreame Q100 is unfortunately too simple, and above all too dim, to really deliver a true HDR effect. Our measured peak brightness reaches at most around 300 nits, which is definitely too low for bright parts of the image to really "hit" you with light. In fact, this is a level we more often associate with SDR material than with HDR. It therefore lacks the brightness headroom offered by more expensive TVs, which makes highlights, reflections and the sun look noticeably more impressive.

HDR colours

Fortunately the Q100 makes up for some of that elsewhere. The manufacturer markets it as a QLED TV, although in practice a PFS filter is responsible for widening the colour palette. Our measurements show coverage of about 92% of DCI-P3 and around 67% of BT.2020. These are not top-tier numbers, but still clearly better than basic LCD TVs without an extra layer to expand the gamut. That means HDR material can at least offer more saturated and varied colours, even if the brightness alone does not yet allow you to speak of a fully convincing HDR effect.

When it comes to brightness, the R85H performs quite well. In most of our test scenes the TV reaches around 800–900 nits, and with larger bright elements it can exceed 1000 nits. These aren't, of course, on the level of the most expensive Mini-LEDs, but they're more than enough for watching films and TV series in HDR and the effect can be quite noticeable. The problem reappears in more demanding scenes, where there's a small bright element on a very dark background. Here the TV can greatly reduce its brightness to avoid lighting up too much of the screen. In our measurements such small highlights fell as low as around 200–250 nits, so it's clear that a limited number of local dimming zones combined with the specific behaviour of the algorithm has consequences here. Fortunately, it doesn't affect viewing all the time. In typical, mixed HDR scenes the R85H looks good and can provide good image dynamics. It's just that with very small points of light you shouldn't expect as strong an effect as on TVs with a much larger number of zones or on OLEDs.

For testing we chose the "Film" mode and we think it’s by far the best of the available presets. There are none of the heavily boosted, unnatural colours you see in Vivid/Dynamic mode. The picture looks quite reasonable straight away, although it falls short of perfect. In SDR material the most noticeable issue was a slight warming of the image. The white balance had too much red, which made whites lean towards a warmer tint, and a similar cast was visible in the greys. In HDR the situation was a little different. Here blue had a slight advantage, making the image a touch cooler. These are not major faults. For such an inexpensive TV the factory settings on our unit were pretty decent, and the "Film" mode already delivers a relatively natural picture without much fiddling with the settings.

In Filmmaker mode our R85H sample in SDR performed adequately, but a few issues immediately stood out in the measurements. In the white balance, as brightness increased more red was added while blue decreased. As a result, the brighter parts of the image had a slightly too-warm tint. Gamma only held the target value at the start. It then gradually fell, which left most of the image a little too bright. The combination of these two factors also affected the colours, with errors growing particularly in the brighter and more saturated samples. It did not look bad, but for Filmmaker mode we expected a bit more accuracy. Interestingly, our sample fared noticeably better in HDR. The white balance was much more even and the individual components stayed close to one another across most of the range. Only in the brightest parts did red start to be lacking, causing white to shift subtly. The EOTF curve looked very good, tracking the target luminance across almost the entire range. That does not mean HDR colours were perfect. The Colour Checker still shows some deviations, especially for some of the more saturated colours, but the errors are clearly smaller than in SDR.

Contrary to appearances, the Dreame Q100 is actually quite well prepared for picture calibration. The menu contains plenty of advanced picture settings that allow fairly precise adjustment of its characteristics. In our case the white balance required the most work, both in SDR and HDR. After correction SDR material looked very good. We managed to achieve an almost neutral white balance and natural colours, with the main limitation remaining the black level itself, stemming from the panel design and the lack of local dimming.

In HDR we were also able to improve white balance and colour reproduction, but here the TV’s electronics reveal their limitations more quickly. Even after very precise EOTF curve adjustment, the Q100 doesn't always stick to it properly during real-world scenes. In some content it can also brighten the image, making some parts look brighter than they should, and some detail in bright areas can be lost as a result.

After calibration the R85H shows it has really substantial colour reproduction capabilities. SDR performed best: white balance could be brought almost perfectly into line, and gamma stays very close to the target value across most of the range. That also translated into very low errors in the ColorChecker, so there's really little to criticise here. HDR also shows a clear improvement, although some issues can't be corrected as well. At the highest brightness levels the character of the backlight itself becomes apparent and the individual components of the white balance begin to diverge. The same applies to the most saturated colours, which don't always land exactly where they should. Despite these limitations the overall picture is considerably more accurate than factory settings, and the biggest difference is definitely visible in SDR. However, there is one thing calibration can't fix. With heavily saturated elements the colour can slightly bleed onto adjacent bright areas of the image. It's easiest to notice on white, which can pick up a faint tint of a neighbouring hue. It doesn't occur in every scene, but when the material is demanding the effect can be visible. This is more a feature of the way the RGB backlight operates than an issue with picture settings.

The weakest point of the Dreame Q100 is its digital image processing. The processor used does a fairly average job of improving weaker material, and the menu offers no function that effectively smooths ugly tonal transitions or reduces visible posterisation. The upscaling itself is also unimpressive. With low-resolution material the image is rather soft and lacks better reproduction of fine detail. Additionally, the Q100 tends to overscan, meaning it slightly crops the edges of the image with very poor sources, for example 480p material. In everyday viewing of HD or 4K content this won’t be a major issue, but with older recordings the processor’s limitations are clearly visible.

In the R85H, image processing is handled by the Micro RGB AI Processor. The name is new, but when it comes to upscaling lower-quality sources, the TV's behaviour is very similar to what Samsung has shown before. And that's not a bad thing, because Samsung has handled this aspect quite well for years. Lower-resolution material is displayed cleanly, edges don't become overly soft, and the TV doesn't try to artificially extract detail at all costs. The result is simply balanced, and for regular TV or older recordings the R85H performs as you'd expect from Samsung at this level. There's still a small downside: overscan, which can't be completely switched off at the lowest resolutions. Another matter is the extra processing applied to low-quality sources. The R85H can smooth posterization and tidy up heavily compressed footage, but it's worth emphasising that it does so relatively aggressively. At stronger noise reduction settings it starts removing not only compression artefacts but also fine detail and the natural film grain. So it's best to use it only when the source actually needs it.

The VA panel in the Dreame Q100 has a native refresh rate of 60 Hz, so right from the start it's not a television built for the most demanding sports fans or gamers. The manufacturer does note the option to run at 120 Hz and that mode is indeed available, but it's primarily intended for a gaming mode. In everyday use the Q100 should therefore be treated as a standard 60 Hz TV. That means less smooth motion during fast sports broadcasts or quick gameplay than in models with 120 Hz or higher panels. One positive is the panel's response time. The VA panel doesn't smear excessively, so motion stays fairly clear and doesn't leave strong, blurred trails behind objects. For films we can also use a simple motion smoothing system. The manufacturer has prepared several presets that help reduce the characteristic judder in material shot at 24 frames per second.

R85H has a 144 Hz panel, so motion handling is really good here. You should remember that the extra hertz above 120 will mainly be used when connected to a computer, so in this category we don't treat them as any particular advantage. For films and TV, what's more important is that the panel is fast enough to provide access to an advanced motion smoothing feature, "Motion Clarity", which lets us set motion from more film-like to very smooth. The panel's response time is a bit worse. Since it's a VA panel, fast-moving objects can leave a slight trail. On a bright background this isn't very noticeable, but the darker the scene, the more noticeable the smearing becomes. This is a typical characteristic of this type of panel and it's easiest to spot in dark scenes.

Dreame Q100 is not strictly a gaming device, but for console use it offers a pretty sensible package. You get VRR to eliminate screen tearing and ALLM, which automatically switches the TV to a low-latency mode when it detects a console signal. An interesting compromise is support for 120 Hz. The panel won't reach that refresh rate in 4K, but drop to 1080p and you can play at 120 frames per second. If a title prioritises smoothness over resolution (and the game offers such a mode), it's worth using. It also includes a handy Game Bar that lets you quickly change screen settings, switch the refresh mode or add a virtual crosshair. The HGiG implementation is a bit weak, but credit is due for Dolby Vision Gaming support on Xbox Series X and S. This isn't a panel for tech purists, but for casual console gaming, especially when trading 4K for smoother Full HD, it performs very well.

Samsung has been steadily expanding its gamer features for several years, and the R85H really doesn't lack anything important. The TV supports 4K at 120 Hz, VRR and ALLM, so it can easily make full use of the PlayStation 5 or Xbox Series X. HGiG also works properly, so when HDR is set correctly on the console, games maintain their intended brightness and you don't unnecessarily lose detail in the brightest parts of the image. The only bigger omission is Dolby Vision Gaming, which Samsung doesn't support on any of its TVs.

The Game Bar is also very useful, a handy menu you can bring up without leaving the game. You can quickly check the frame rate, VRR status or change the key picture settings. Samsung also includes a few less obvious features, like the ability to change the aspect ratio or Game Motion Plus, which can further smooth games running at 30 or 60 fps. Of course this comes at the cost of higher input lag (around 55 ms), but for slower-paced titles it may be an interesting option for some.