LG OLED C4 vs Samsung U8000F (IPS)

The results of HDR materials are definitely among the better ones. Practically every film significantly exceeds the 700 nits barrier, which allows for a very realistic image. Of course, none of them surpasses the magical thousand, however, the combination of such results along with unlimited contrast and black effectively boosts the visual outcome. The last of the scenes, featuring a fullscreen sun burst, is indeed less bright than the others, although it still represents a respectable level. It's also worth mentioning the excellent coverage of the DCI-P3 colour palette, which will enable the achievement of exceptionally vivid colours.

Better doesn't mean good – and that's exactly how you can sum up the capabilities of the U8092F when it comes to displaying bright movie scenes in HDR mode. The brightness of the panel is just under 250 nits, which is definitely too low to enjoy any light effects. An interesting situation was observed during measurements of the fourth scene from the movie Sicario 2 – the television clearly dimmed the entire screen in an attempt to achieve better black levels (which still remain weak). One could even suggest that the device employs some form of "global dimming," but unfortunately – the effects are still very poor. To make matters worse, the television does not support a wide colour gamut – the coverage of the DCI-P3 space is around 80%, so don’t count on truly vibrant colours. The HDR image here looks more like slightly brightened SDR, and that’s the approach we would suggest you stick to when it comes to this television.

The best factory mode implemented in the tested television was "Filmmaker". That was the one we used during all tests. This mode, in terms of colour reproduction, turned out to be quite decent, although other flaws effectively detracted from the enjoyment of the viewing experience. Starting with the most basic one, which is white balance, it was easy to notice that this was marked by a dominance of red, which completely altered the characteristics of the picture. We could see a strong yellowing of the whites and a shift of all colours to warmer tones. The gamma, which is a graph as equally important, if not more so, was quite severely reduced, resulting in a significant drop in contrast, except for the start of the graph, where the television insidiously lost details. That’s all regarding SDR materials. Looking closely at films with a wide dynamic range, we can observe exactly the same phenomenon of white balance yellowing as in films with a standard colour palette. The EOTF curve, which replaces the gamma chart for us, is practically perfect and cannot be faulted.

Samsung U8000F has been tested in the best possible built-in picture mode on the television, which is Filmmaker Mode. This mode should – at least in theory – provide a cinematic, reference image without unnecessary enhancements. For SDR content (mainly HD/SD), the television presented itself surprisingly well out of the box. White balance errors hovered around a value of 3, which is roughly on the edge of perceptibility. The only criticism could be directed at brightness management – the gamma chart showed a slight tendency to brighten or darken certain sections, but overall it performs quite well for this price segment.

Unfortunately, it looks much worse in HDR mode. Although the white balance was not terrible, the television had significant colour errors – particularly evident on the Color Checker chart, where almost every sample fell outside the target point. The image in HDR simply looks unnatural, and the colours can be shifted, muted, or too cool. This largely stems from the fact that U8000F does not support a wide colour gamut (DCI-P3). The television is physically unable to display correct colours in the HDR standard – and this is unfortunately felt in every more demanding material.

As we mentioned earlier, LG televisions are equipped with advanced tools for carrying out the calibration process. We used them to model the picture in line with what the director envisioned. And without modesty, we must admit that we achieved this phenomenally. Both SDR and HDR materials present a level that clearly indicates this is how a film should look. It's worth taking a look at the colour errors on the "ColorChecker" palette, where practically none of them exceed "1", except for two samples.

Even though the U8000F already offered a fairly good picture in SDR straight out of the box, we managed to tweak it a bit more. We were able to remove a slight purple tint and adjust the gamma to a more reasonable level. However, the television still tends to over-brighten the smallest and brightest parts of the image – the gamma chart shows a characteristic "dip" that is hard to fully straighten out.

Unfortunately, the situation looks worse in HDR. It's difficult to talk about any significant improvement here – the television simply isn't designed for HDR content. We tried to adjust the picture in the advanced settings, but despite our efforts, the colour errors remained quite noticeable – a delta E above 7 is already significantly visible deviations. It's a bit unfortunate, but that's the charm of a budget build. In SDR, the U8000F performs reasonably, whereas HDR is simply not its league.

Once again, we will take a look at the feature responsible for gentle gradation, but we will also address the one that aims to enhance the quality of lower-quality materials. The default smoothing of tonal transitions, as we could see, was not the worst, but it can be improved further. The function has a slider that allows us to adjust its intensity. We recommend using the former, as it produces very good results and does not blur important details.

Image scaling on LG C4 is quite good, however, it cannot be said to be without flaws. The image is slightly sharper by default, although not in a very noticeable way. While jagged edges of trees can be seen, it is not a major issue when compared to other manufacturers.

When it comes to how the Samsung U8000F handles lower quality materials, we must admit that Samsung has made progress compared to its predecessor from last year – the DU7192 model, which theoretically occupies the same place in the offering.

This year's model has been equipped with a function to improve the smoothness of tonal transitions, which has been implemented significantly better than last year. Yes, the TV still uses quite strong algorithms that can distort details or remove film grain, but even so – it can be confidently said that it operates effectively.

However, not everything has gone perfectly. The U8000F has noticeable issues with slight frame stuttering when watching very old content in very low resolution. If someone plans to play their old VHS tape, they must be aware that the picture may appear slightly "choppy".

The maximum refresh rate we can set on the LG G4 is 144 Hz. Naturally, this is only possible when connecting the TV to a very powerful PC. Otherwise, we will operate at a maximum refresh rate of 120 Hz, which is recommended if we primarily want to watch sports or content with a lot of motion dynamics. For those who require high fluidity of the image, the manufacturer has implemented a multi-level motion smoother called "TrueMotion". It has been divided into two separate sliders that adjust the sharpness of moving images (De-Blur) and judder (De-Judder). Both sliders can be set in the range of 0 to 10, with each degree affecting the level of smoothing, allowing everyone to find their sweet spot.

The panel of the LG OLED C4 features an average response time of less than 1 ms (which directly results from our measurements), enabling the achievement of an extremely clear image, unattainable for LCD TVs, which can have response times of up to several milliseconds. This is clearly evident in the images from the "UFO Test," which show no trailing blur behind the object.

Samsung U8000F is equipped with a 60 Hz panel, so right from the start, it's clear that we shouldn't expect miracles. This is simply the standard in this class – sufficient for everyday viewing, but without any fireworks.

The television offers one motion smoothing slider – a feature called “Motion Blur Reduction”, which allows us to adjust the smoothness of the image in movies. Higher settings provide a more “theatrical” and smoothed effect, while lower ones maintain the original character of the film with a slight 24p effect. An interesting feature is “Clear Motion LED”, or BFI mode – which inserts black frames between the image frames to enhance motion clarity. However, in practice, the screen flickers significantly when it's activated, and it's better viewed as an experiment rather than something that truly enhances gaming comfort.

We can now say that LG C4, like practically every OLED television from the manufacturer, is exceptionally good in terms of cooperation with consoles and PCs. Thanks to the implementation of four full-bandwidth HDMI 2.1 ports at 48 Gbps, the manufacturer has embedded all the features that enhance gaming comfort, including simultaneous support for FreeSync and G-Sync technologies. With such a tandem, players with graphics cards from AMD or nVidia can safely choose C4. However, what should please gamers demanding the highest possible quality the most is the simultaneous implementation of HDR Dolby Vision and HGIG mode. The former is particularly important as it operates with extremely low input lag in all settings.

A standard feature in televisions from the Korean manufacturer is also the implementation of GameBar, allowing for quick adjustments of settings "on the fly," without the need to exit the game. It also allows for image adjustments for people with visual impairments, which is an incredibly nice touch. Another important piece of information is that when VRR technology is enabled, we won’t experience a drop in contrast. This is, of course, due to the design of the panel and the absence of conventional backlighting. It is, however, normal for shades of grey to flicker slightly, although this is a characteristic feature of this function regardless of the manufacturer and television.

In summary: LG C4, just like all the manufacturer's OLEDs equipped with high-refresh-rate panels and HDMI 2.1 connections, creates a harmonious whole with consoles. In practice, it is a complete television, and if we expect the highest possible efficiency in gaming, C4 will be an ideal choice.

Samsung U8000F offers a basic set of features for gamers, which may still be sufficient for less demanding users. It has an automatic game mode – when a game is launched on the console, the TV automatically switches to low latency mode, which significantly improves response time. It also includes a VRR function, or variable refresh rate, which works within the range of 48 to 60 Hz. This means that both Xbox and PS5 won't produce the "tearing" effect – as long as we stay within this range.

And unfortunately, that's about it for the advantages. Additional features like Game Bar or higher refresh rates are reserved for higher models of Samsung’s 2025 line. In theory, the TV also supports the HGiG function, which should adjust the HDR image to the intentions of game developers. Unfortunately – although this function appears in brochures and store materials – its setup on the Xbox console turned out to be... impossible in practice.