Sharp FQ8 vs TCL C6KS / C69KS / Q6CS

The Sharp FQ8 achieves a maximum brightness of over 450 nits, which is commendable for its price range. While this level might not be groundbreaking, it places the television among the better-performing models in its class. At this brightness, the image appears vivid and detailed, and the HDR metadata functions effectively, offering a more immersive viewing experience compared to dimmer devices.

The television supports the advanced Dolby Vision HDR format, enhancing the depth and richness of the content. It also includes Dolby Vision IQ, which adjusts the image's brightness and colours based on ambient lighting. However, the implementation of this feature on the Sharp FQ8 is suboptimal, introducing artificial brightening and noticeable distortions. For this reason, it is advisable to disable Dolby Vision IQ for the most accurate picture quality.

With quantum dot technology, the television achieves a colour gamut coverage of approximately 94%, resulting in vibrant and realistic colours. This combination of features ensures the Sharp FQ8 delivers an engaging and detailed visual experience, even with some limitations.

And how does the issue of HDR look? Here the C6KS performs quite well and – as is becoming a recurring theme in this review – identically to the C6K model. The maximum brightness generated by this television is around 600 nits. In bright scenes, this translates to a really solid, cinematic effect, and generally, the video materials look good here. However, one must remember the specifics of the dimming algorithm in this model. When very small, bright points (e.g., stars) appear against a dark background, the television can dim them quite significantly. The goal is simple: to eliminate blooming and maintain the best possible black levels. It’s a reasonable compromise. Most viewers will definitely appreciate deep, “true black” more than additional micro-details that could cause grayness on the screen. Such is the nature of local dimming technology in this price range, and one must be aware of it. It’s also worth noting that the TCL C69KS (C6KS) has an additional PFS coating, which is marketed under the tagline of QLED technology. Thanks to this, the colors are saturated and vibrant – our measurements showed that the coverage of a wide color gamut reaches 92% here.

The Sharp FQ8 was evaluated for colour reproduction in its movie mode, which provides the best default settings for achieving realistic visuals. While it performs adequately, certain issues impact the overall image quality. Tests on HD content revealed significant white balance problems, with a marked dominance of red. This is evident in the colour graph, where the red line noticeably rises above the others, and in practical tests, such as a movie scene featuring a child, where the image appears overly warm and unnaturally red. Similar issues persist with 4K HDR content, where an excessive red tint detracts from the accuracy of colour reproduction, an important consideration for viewers prioritising faithful visuals.

For SDR contrast, the gamma graph displayed an unusual anomaly at the start, highlighting reproduction issues. The remainder of the gamma curve lies below the reference line, indicating suboptimal brightness and contrast levels for standard content. In 4K HDR, the EOTF curve also deviates significantly, suggesting inconsistencies in brightness reproduction. These fluctuations can result in less enjoyable viewing experiences for HDR content, particularly in scenes requiring precise light and dark balance.

Unlike the more expensive C6K model, the tested C6KS does not have an option labeled Filmmaker Mode in the menu. Is this a reason to cry? Absolutely not. Our tests have shown that in practice, in terms of color reproduction, the absence of this specific label makes virtually no difference. The best available Film/Cinema mode here offers nearly identical picture characteristics to the aforementioned Filmmaker mode in the more expensive model. So we get a very similar image, just under a different name. So if you were wondering whether paying extra for the C6K gives you better colors – the answer is: no, in both cases the base is the same and requires slight adjustments.

After calibration, the Sharp FQ8 shows notable improvements in its performance for SDR content. The white balance has been significantly refined, with all lines approaching the reference line. While the lines are not perfectly straight, the results are impressive for a TV in this price range. This adjustment enhances the naturalness and accuracy of colours, contributing to a more enjoyable visual experience. However, the gamma chart still displays the peculiar jump at the start, though the remaining line now aligns much closer to the expected outcome.

For HDR content, the white balance also sees meaningful improvements compared to the pre-calibration state, although it doesn’t perform as well as in SDR mode. This refinement results in more consistent and visually appealing colours, despite some remaining imperfections. On the downside, the EOTF chart reveals limited progress in contrast due to the lack of control over dynamic tone mapping settings, which hampers uniform brightness representation in HDR.

Despite these limitations, the calibration significantly elevates the Sharp FQ8, particularly in SDR mode. The improved white balance and colour reproduction deliver a more natural and pleasant viewing experience. While HDR content still leaves room for improvement, the TV achieves a respectable level of performance, solidifying its position as a strong contender in its price range.

Thanks to the white balance adjustment, the tendency of the C69KS to distort colors has been effectively reduced, leading to a very good final effect. After calibration, we won't see excessive warmth in SDR scenes or overly cool tones in HDR. However, it's worth noting the brightness characteristic. In SDR content, there are hardly any objections – the image looks very good, especially in older films, television programs, or materials from YouTube. It is much more difficult to evaluate the performance of the television in HDR. Analysis of the EOTF curve suggests correct behavior, but its practical variant shows certain limitations. The C69KS can overly brighten the smallest elements of the frame, while at other times it can dim the entire scene. Calibration has therefore brought clear benefits in terms of color reproduction, but certain limitations arising from the operation of local dimming and the way it is controlled by the C69KS cannot be avoided, as we also saw in the C6K test.

The Sharp FQ8 performs adequately with its 10-bit colour reproduction feature, providing smooth transitions between grey shades in the light bulb photo. For optimal results, setting it to medium is recommended, as it avoids issues like grain smoothing or blurring key elements. The "low" setting also yields good results without introducing unwanted visual artefacts.

In terms of upscaling, the Sharp FQ8 TV handles video without overscan, making full use of the screen. The jagged edges of branches are noticeable, but the edges of trousers appear without any clear jaggedness, contributing positively to the overall image quality. Additionally, the TV's AI Super Resolution feature enhances clarity by artificially sharpening jagged elements, further improving the viewing experience.

C69KS handles upscaling quite well. The tested 576p material looks surprisingly decent – a significant amount of detail is preserved, and the algorithm adds a subtle "rounding" effect to sharp edges, making the image appear more cohesive. However, the smoothing of tonal transitions is lacking. The television practically cannot improve them, leaving the image in a somewhat raw state. With older materials, this can be simply exhausting, as the lack of additional processing highlights all imperfections.

The Sharp FQ8 features a 120 Hz panel, able to support playback at 144 Hz when connected to a PC, which should theoretically provide smooth motion rendering. The TV includes features designed to enhance film fluidity and reduce motion blur, crucial for more dynamic content. However, in the absence of Black Frame Insertion (BFI) technology, the panel's average response time leads to less-than-ideal results. This results in slight motion blur, which may be particularly noticeable when watching sports or during intense gaming sessions.

C69KS offers a simplified motion improvement panel in movies, allowing you to adjust the intensity of the effect using a slider. This makes it easy to match the smoothness to your own preferences. The possibility of using higher refresh rates is also a plus – even though the panel operates natively at 4K at 60 Hz, lowering the resolution to 1440p allows you to enable 120 and 144 Hz modes, both on consoles and PC. This sounds like great news, but in practice, the image at these settings suffers from significant motion blur. The effect is noticeable enough that the overall experience feels simply mediocre and loses its appeal in everyday use.

The Sharp FQ8 offers several features that cater to gamers, enhancing the overall gaming experience. Firstly, the television is equipped with HDMI 2.1, which brings several advantages. ALLM (Auto Low Latency Mode) automatically switches the TV to a low-latency mode when a gaming device is detected. VRR (Variable Refresh Rate) helps reduce screen stuttering by adjusting the screen’s refresh rate to match the number of frames generated by the console or PC, providing smoother gameplay, especially in dynamic games. Additionally, the TV supports G-Sync, which synchronises the image with the graphics card, preventing stuttering and screen tearing.

Despite these advantages, the FQ8 has some limitations. The lack of support for HGiG (HDR Gaming Interest Group) means the TV does not optimise the dynamic range for HDR games. Furthermore, while Dolby Vision mode can improve picture quality in supported games, it suffers from very high input lag.

If we overlook the smearing and lack of native 4K at 120 Hz, the C69KS impresses with how well it performs during gaming. We get everything you can expect from a gaming television: variable refresh rate (VRR), automatic switching to game mode (ALLM), Dolby Vision Gaming mode, and a reasonably functioning HGiG. The TV can also operate at 120 and even 144 Hz at lower resolutions, allowing for smoother gameplay on console or PC. Additionally, there is a clear Game Bar that lets you quickly glance at key settings during gaming. As a result — despite a few limitations — the C69KS can be a truly successful screen for gamers.