Samsung QLED Q70D / Q74D / Q77D vs Samsung Q60D / Q67D / Q68D

The brightness of the Samsung Q70D is fairly average, yet it delivers a noticeable HDR effect. With brightness exceeding 400 nits, the distinction between SDR and HDR materials becomes evident. As observed in the discussion about contrast and black levels, the TV's performance varies across different scenes. In a scene featuring a bright sun against a darker foreground, the measured luminance is lower. However, in a scene with a large, bright light source dominating the frame, the TV achieves its peak brightness, reaching nearly 500 nits—a commendable result for its price range and display class.

Despite these strengths, the relatively low coverage of the wide DCI-P3 color gamut occasionally results in less vivid color reproduction. Even so, the TV offers rich colors and precise shade reproduction, enhancing the movie-watching experience. Furthermore, the Q70D excels in motion blur elimination during dynamic scenes, making it a solid choice for enjoying sports broadcasts and gaming.

The Samsung Q60D consistently achieves brightness levels above 500 nits, which is above average for its class of devices. This level of brightness enhances the viewing experience, providing a more immersive home cinema feel, with clearly visible details in bright areas of the image and well-rendered contrast dynamics, especially when watching content from streaming platforms or Blu-ray discs. As a result, movie screenings gain added depth and realism, particularly in well-lit scenes.

However, despite incorporating quantum dot technology (QLED), the TV does not excel in colour reproduction. The DCI-P3 colour space coverage is limited to 90%, which may become apparent in more demanding scenes where the richness and saturation of colours are crucial for image quality. While the Q60D offers solid performance, those seeking more vibrant and accurate colour reproduction may notice some limitations.

The best factory mode on the Samsung Q70D is "Filmmaker," and it is the one we used when conducting various tests. Before the calibration process, it had several flaws that effectively prevented the conveyance of the director's intentions. In both SDR and HDR materials, the white balance was dominated by red and green colors. As a result, there was a characteristic yellow tint on the image, causing whites to appear yellowed and creating issues with skin tones, which were noticeably too warm. The reduced gamma in the standard color gamut materials caused a significant drop in the already low contrast. This resulted in an emphasis on details in the blacks but also in blown-out images in brighter scenes. The EOTF curve, in this case, turned out to be much better and only lightened those scenes with relatively low luminance. This was clearly visible in the section where we measured the maximum brightness of the television in HDR materials. At that time, the frame from the movie "Billy Lynn" was unnaturally bright and lacking depth.

For several years, Samsung has included a "Filmmaker" mode in its televisions, designed to deliver picture settings that remain true to the original vision of filmmakers straight out of the box. This is undoubtedly a significant move towards achieving cinematic quality at home, but it's important to note that this mode is not without its drawbacks.

For instance, the white balance in both SDR and HDR modes tends to show an excessive amount of red, resulting in an overly warm image. This can cause actors' skin tones and brighter scenes to appear unnaturally pink. The Colour Checker test confirms this issue, as colour samples often shift towards red hues, deviating from the neutral colour representation that would be preferred in a professional context.

In terms of contrast, there is a noticeable dip at the start of the gamma curve, where values below 2.4 fall to around 2.1. This can make darker scenes look less detailed, diminishing their depth. When displaying HDR content, the EOTF curve (which handles brightness representation) shows a significant peak at the beginning of the graph, potentially leading to excessive brightness in lighter areas of the image and disrupting the natural tonal balance.

Fortunately, Samsung provides a wide range of calibration tools in all its televisions, where we can find 2-point and 20-point grayscale adjustments as well as advanced CMS. Thanks to this, we were able to significantly improve the quality of SDR and HDR materials. The vast majority of errors have been corrected, and the image that the Samsung Q70D now generates is definitely closer to the reference. Higher deltaE errors in the high dynamic range materials are primarily due to the display's insufficient luminance.

After professional calibration of the Samsung Q60D in film mode, users can experience a notable enhancement in image quality. Samsung TVs have long featured both 2- and 20-point grayscale adjustments, and an advanced Colour Management System (CMS), enabling precise tuning of colour and hue. Following calibration, the white balance for both SDR and HDR content is free from significant peaks and red tone shifts, resulting in a more natural image. Although a few larger errors may still be evident in HDR mode, the overall improvement in colour accuracy is impressive.

In terms of contrast, despite the inherent limitations of the TV’s technology, there has been a marked improvement. Calibration enhances the visibility of details in darker scenes and accentuates the differences between lighter and darker elements, making the image appear more dynamic. This leads to a more satisfying viewing experience, with improved depth and realism in the displayed content.

The function responsible for improving gradation is named "Noise Reduction" in the menu. As we have confirmed, it is worth activating as it has a positive effect on tonal transitions. More importantly, it does not negatively affect film grain or fine details, which sometimes the competition "offers" us.

Image scaling in Samsung Q70D should be rated as average. The manufacturer aims not to artificially sharpen the image but to leave it naturally softened.

However, when it comes to processing and scaling lower-quality content, the TV performs quite well. The image is displayed without overscan, ensuring the full use of the available screen space. Additionally, the edges of models or tree branches are not overly jagged, resulting in satisfactory content quality. While noise reduction could be more effective, the overall processing of lower-quality materials is positive and meets expectations.

The Samsung Q70D is the first model in the manufacturer's range to feature a 120Hz panel, resulting in more advanced motion smoothing capabilities compared to lower-category models. Within the menu, three functions are dedicated to improving motion fluidity: "Motion Blur Reduction," "Judder Reduction," and "Clear Motion (LED)." The third option will be discussed separately. The first function enhances sharpness during motion, while the second adjusts the degree of smoothing. The smoothness feature on the Samsung Q70D performs well, with each setting delivering a noticeable effect. This allows viewers to customise the level of fluidity, making it suitable for those who dislike the typical stuttering of films or enjoy watching sports. The accompanying picture illustrates a configuration with mild smoothing, avoiding the soap opera effect.

The panel employed in the Samsung Q70D offers a commendable response time for its class. While it won't deliver razor-sharp motion clarity, it is a strong choice for sports enthusiasts at this price point.

The Samsung Q60D is equipped with a 60 Hz panel and includes a feature known as "Motion Reduction," designed to minimise motion blur and improve the overall fluidity of the image. This addition is particularly beneficial for users who enjoy watching films and series, providing a smoother visual experience even during dynamic action scenes where detail is essential. However, while "Motion Reduction" enhances the viewing experience for cinematic content, it is important to note that this panel may not be the optimal choice for gaming due to a noticeable motion blur effect, which can become apparent during fast-paced gameplay.

The tested television, Samsung Q70D, has four HDMI 2.1 ports, all offering a bandwidth of 40 Gbps. Despite this, no negative effects were noticed during testing. More importantly, the TV supports all features associated with the HDMI 2.1 standard. This will certainly please gamers, as it ensures optimal gaming performance using a console or a PC. While HDR Dolby Vision is absent, the correct implementation of HGIG mode and the absence of any calibration checkerboard issues are noteworthy. Additionally, Samsung stands out by allowing gaming with the smoothness enhancer activated without significant performance degradation. This means that 30 fps titles are perceived similarly to those running at a native 60 frames per second.

Samsung was one of the first manufacturers to introduce the Game Bar, which has been consistently improved. It provides all necessary gameplay information and allows users to adjust "on the fly."

In summary, the Samsung Q70D performs excellently with both consoles and computers. All functions worked seamlessly, and there were no issues. The ability to activate the smoothness enhancer without a noticeable increase in input lag is a game-changing feature.

The Samsung Q60D has gaming features such as ALLM (Auto Low Latency Mode), HGiG (HDR Gaming Interest Group), and Game Bar, which contribute positively to gaming experiences by optimising response times and enhancing HDR visuals. However, the absence of HDMI 2.1 support limits the TV's potential, preventing the use of VRR (Variable Refresh Rate) which could further boost smoothness and image consistency. For casual gamers the Q60D should suffice, delivering satisfactory performance during typical gameplay. On the other hand, for more discerning gamers, models with a higher refresh rate and HDMI 2.1 support are recommended. Such upgrades enable full functionality and better compatibility with the latest games, ensuring smoother motion and superior image quality – essential for an immersive and top-tier gaming experience.