Samsung Q6F (IPS) vs TCL C69K / Q6C

Unfortunately, the Samsung Q6F is a very dark model. Its peak brightness in HDR does not exceed 250 nits, which is definitely too low to even speak of any "high dynamic range" effect, or HDR. In practice, it's better to stick to content in SDR format, which simply looks more predictable on this TV. Another problem is the global dimming technique – in scenes with a lot of black, the TV drastically dims the entire panel to artificially improve the black levels. This causes the image to become even darker, and brightness can drop below 100 nits. The only consolation is the QLED technology, but even here it's average. The applied quantum dot layer is not top-notch, as the coverage of the DCI-P3 color gamut does not exceed 90%. As a result, colors in HDR content may just seem under-saturated.

In terms of brightness, TCL C69K / Q6C is a moderate model. Under optimal movie conditions, it shows its full potential, reaching a maximum of around 600 nits. In scenes with large, intense light sources, the HDR effect can be truly satisfying, providing a cinematic sparkle. However, it should be noted that when managing the backlight zones, there are situations where some elements of the image become dimmed, and sometimes they are barely visible. This suggests that there is still a lack of proper optimization of algorithms, though considering the technical parameters in this price range, the construction still looks very good.

We tested the television in Filmmaker mode, which showed us two completely different faces of this model. Looking at SDR content, we were honestly shocked at how good this TV looks straight out of the box. It was really hard to nitpick anything here. Despite a slight “haze” in the white balance or somewhat brightened details in the blacks (which directly results from the IPS panel's design), color errors hovered around the “2” level. This is surprisingly good, even outstanding, considering the price of this device.

On the other hand, what the Q6F displayed in terms of colors after switching to HDR mode was a very unpleasant surprise. The errors in color reproduction and palette were so huge that our charts literally ran out of scale. Of course, since Samsung even in such an inexpensive model offers very advanced calibration possibilities, we decided to approach the subject professionally and check what could be done about it during calibration.

The Filmmaker mode, which has arrived in this year's TCL televisions (including the C69K / Q6C), is definitely the best choice "to start with." This is the mode we recommend for everyday viewing of movies and series. Unfortunately, as is often the case, best does not mean perfect. In SDR content, the image turned out to be too warm, with a strong red tint in the white balance. We had the opposite impression with HDR content – here the image became cooler than it should have, due to an excess of blue color. Additionally, the brightness characteristics sometimes resulted in overexposure. In practice, this translated to quite noticeable errors in color tests, which is hard to accept in a mode labeled as “by the creators.”

After our calibration, the colors in SDR mode looked even better – the result is quite surprising, as color errors at level "1" are something usually seen in devices costing several thousand dollars. In this regard, the Q6F is really a great screen for everyday television, less demanding series, or movies. Unfortunately, our interference in HDR mode did not bring about a noticeable improvement. The television, due to its poor black levels and low coverage of a wide color gamut, still has significant problems with proper color saturation, especially red. This is an example of a device where HDR mainly exists as a label on the box – for everyday use, we definitely recommend watching content in SDR format.

Through white balance adjustment, we were able to significantly reduce the tendency of C69K / Q6C to distort colors, which resulted in a very good final outcome. After calibration, the issue of excessive warmth in SDR scenes and overly cool images in HDR disappeared. However, it is worth closely analyzing brightness characteristics. While there are few complaints about SDR content - the image looks really good, especially in older movies, TV programs, or on YouTube - the situation is much worse with HDR content. Analysis of the EOTF curve suggests that everything is fine, but in practice (EOTF in films), the limitations of the design become apparent. This model tends to excessively brighten small parts of the frame, while in other situations it dims the entire scene too much. The effect of calibration is undeniable, and in terms of color accuracy, C69K / Q6C gains a lot. Unfortunately, certain limitations resulting from local dimming management simply cannot be overcome.

The Q6F handles upscaling lower resolution content to native 4K very well. The scaling is surprisingly good here, even for such a budget TV from the QLED series. The only downside is when we watch very low-resolution material, like 576p (typical for old DVD players) – then the image may be slightly cropped. This is because the TV does not allow for the Overscan feature to be turned off, which is a common issue with Samsung devices.

The situation is completely different when it comes to digital processing, which is the attempt to smooth the image from unwanted artifacts. Here, the TV completely fails. Although we find a function in the menu called "Noise Reduction", it yields no visible results regardless of the slider setting. The only thing it seems to do is introduce unwanted errors into the image. Despite its presence in the system, we definitely do not recommend using it.

In terms of image scaling, TCL C69K / Q6C performs quite well. Lower quality content is displayed acceptably, and thanks to the lack of overscan issues, the image is presented in full without any cropping. However, one shouldn't expect miracles – very low-quality materials won't gain a new life here, as the image processor has its limitations.

On thin lines and details, one can see characteristic jitter, indicating a lack of more advanced image enhancement algorithms. It's also a pity that the C69K / Q6C lacks the function for smoothing tonal transitions. As a result, in older movies or video materials, color banding can be noticeable and may become distracting during longer viewing sessions.

The 60 Hz panel in the Samsung Q6F is the standard in this price range, which makes it a rather average model for dynamic sports or gaming. However, in the case of movies, the TV performs quite well thanks to the smoothing feature. The "Motion Smoothing" option allows you to adjust the fluidity of motion to your own preferences – from maintaining a cinematic feel to full fluidity.

The use of a 144 Hz panel in TCL C69K / Q6C is a significant advantage in this price range. It represents an important step forward compared to its predecessor (C655 PRO), which only offered 60 Hz at 4K. The difference is particularly noticeable when watching sports or playing games – the ball, players, or dynamic action in games are displayed more clearly and without losing details. An interesting feature is also the ability of the panel to operate at 240 Hz (which the manufacturer does not officially mention) – we will return to this topic in relation to the PC gaming mode. TCL has also added a feature for movie fans: “Motion Clarity.” This allows users to adjust the picture to their preferences using two simple sliders. We can either keep the visible film frame or opt for very smooth, "

We won’t beat around the bush – the Q6F is not a television designed with gamers in mind. While it does have features like ALLM (Auto Low Latency Mode) and VRR frame synchronization for consoles, the list of benefits pretty much ends there. Besides these basics, the TV offers nothing more that might satisfy those who spend a lot of time in front of a console. It’s a real shame that such a useful tool as Game Bar is missing here, which in Samsung’s higher models allows for quick control of game parameters. In terms of gaming, this is an absolutely basic model and is only suitable for "casual" gamers.

TCL C69K / Q6C is a television that can boldly be called equipment created with gamers in mind. Here we have 4K at 144 Hz, VRR support, automatic game mode (ALLM), and Dolby Vision Gaming. Additionally, there's a practical Game Bar, which is a panel with the most important settings right at hand – useful when we want to quickly change something during gameplay (e.g., aspect ratio: Yes, it’s possible!). The wide range of VRR, reaching up to 240 Hz, is noteworthy. This option is primarily for PC gamers who will lower the resolution below native 4K. In that case, the TV can spread its wings and show additional smoothness, especially in fast esports titles. For consoles, we stick to the classic limit of 120 Hz, but the possibilities are still quite broad. The only drawback is slight motion blur that can sometimes be seen in dynamic scenes. Other than that, C69K / Q6C offers everything gamers expect from a television.