Friday, June 5, 2015

Overview Ultra HD 4K TV Samsung UE55JU6400 – hifi News.RU

What is the Samsung JU6400?

When we asked various TV manufacturers, with some TV models in the past year they had to compete the hardest The answer most often was the same – Samsung H6400. This is easily explained, because the TV intelligently designed, equipped with a good set of features and smart-offered at a very attractive price. This model had a resolution of Full HD, but continuing to move in the direction of Ultra HD 4K, Samsung has to offer something new this year, if it wants to build on the success model H6400.

TV JU6400, who make up line affordable HD 4K models this year, have almost the same ratio of quality and price, as well as H6400. These constructs are more plastic, but the TVs are quite attractive design, equipped with a panel Ultra HD 4K, quad-core processor and the latest smart-platform-based Tizen. The TVs also used JU6400 direct LED backlighting, but without excellent corporate local extinction; There is also no support for 3D, though for most people it’s probably not important.

However, even without 3D, and local dimming TV series JU6400 has an impressive set of features and a wide range of screen diagonals models is sure to attract potential buyers. At the time of writing UE40JU6400 could be purchased for about $ 1,100, UE65JU6400 for $ 3750, and the big UE75JU6400 for $ 6000. However, the most popular model, probably will be a 55-inch TV UE55JU6400, who at the time of writing test offered for $ 2000 price is quite attractive, so let’s check out this TV in.

design

The appearance of the TV 55JU6400 pretty cheesy, and it looks even boring for such a good company like Samsung, but we liked its minimalist design. In the end, the most important thing is that we are interested in the TV – is the quality of the image. The model 55JU6400 flat screen, no doubt please those who are not interested in buying Samsung TV with a curved screen. Around the screen is a black plastic frame 1 cm wide, with the effect of brushed metal, and thanks to the filter screen is virtually glare. When installing the TV on the stand under it will be a free height of about 7 centimeters – enough to accommodate the soundbar.

TV is located on the lovely support, which is made of black plastic and silver metal. Unfortunately, the stand does not allow to turn the TV set, which limits the choice of the optimal viewing angle. And in this case, as we found out later, this is important. The TV uses a direct 55JU6400 LED lights that increase the depth of the housing up to about 5 centimeters. However, this is a small price for a uniform illumination of the screen. The overall quality of the TV production of the good, and yet plastic construction does not create a feeling of a solidity, which produces some of the more expensive models of Samsung. In general, the construction and design of the TV is completely justified the expectations that exist in this market, and looks exactly to your price tag.

 TV Samsung UE55JU6400

Connectors and management

All of the connectors on the TV are grouped on the right-rear, when viewed from the side of the screen. There are four HDMI-input (with support for MHL and ARC), three USB-socket and a connector for terrestrial antenna DTV. All sockets are parallel to the rear panel and are at a distance of 27 mm from the edge, which simplifies the cabling. Directly on the back cover removed component and composite video inputs, stereo inputs, optical digital output, 3.5mm headphone jack and connector Ethernet. There is also a slot CI (Common Interface).

In contrast to the more expensive television company, 55JU6400 completed with only one remote. This is a standard remote Samsung, fairly large, and equipped with all the necessary buttons. The button layout is well thought out and manage the most frequently used functions can be, holding the remote in one hand. You can display information about the current channel digital TV, as well as the use of EPG-functions. Navigating in the smart-TV easy and intuitive thanks to the cursor keys, so the lack of control over the movements of the control, as in the more expensive models, not taken such a big omission. In general, the remote control is quite effective, has convenient proportions and well in the hand.

Functions and Features

It is quite obvious that the main functional feature is the screen 55JU6400 Ultra HD 4K, with the resolution of 3840 x 2160 pixels. Since UHD TV supports decoding VP9 and HEVC, you can also watch streaming video service Amazon Prima Video and Netflix – depending on the available speed of Internet connection. But if you will not be able to view video UHD-as with the help of Internet services, then at least take advantage of viewing the relevant files from USB-carriers.

55JU6400 features proprietary panel Samsung Ultra Clear, which minimizes reflections and the glare from light sources in the room watching. TV does not have a local quenching technology of LED backlight, but is equipped with a global limit of its brightness. Smart TV system this year has undergone major changes and now operates under the operating system Tizen. Instead of full-screen application pages are now used WebOS, reminiscent applied in his TV company LG.

All the controls 55JU6400, including a choice of inputs, steel applications in the system, with easy navigation using the cards, which appear as button on the screen. Choosing the cards, you can use the right services, to run the game, go to social networks, or just switch between inputs. The system is fast and stable thanks to quad-core processors.

There are regular firmware updates that are downloaded and installed automatically in the background. Services available through the smart-platform include a standard application store Samsung App, 4K Netflix, Amazon Prime Video, Facebook, Twitter and other social networks, as well as games. In the near future we plan to give a detailed overview of the new smart-TV system, so stay tuned for our publications.

 TV Samsung UE55JU6400

Image Adjustment

To get the best quality picture from the TV 55JU6400, we recommend you select Movie Picture Mode, set the Colour Tone on Warm2 and Auto Colour Space, together with the appropriate settings for contrast and brightness. In our test sample, it is possible to obtain a very good image sharpness. Video posted below shows all these settings, as well as the white balance and color gamut. However, given the very good picture quality at the factory setting, we have warned against simply copying the settings. It is possible that they do not need, and may even worsen the image quality, since each TV has its own differences, and viewing conditions are also different.

Calibration

Before calibration

As we have noted, by mode Movie Picture Mode, setting hue Warm2 and Auto Colour Space, you’ve already got a very good image. We were very impressed with the accuracy of serial infusions Samsung TVs this year and were able to see this as a test sample, and the production model that we tested.

55JU6400 is no exception to this rule, and as you can see the graph on the left, gray scale and characteristic scale is very accurate. There is a small green flare on the scale of gray, but it is completely invisible when viewing video. Gamma is at 2.4, which makes the image slightly more intense.

As we waited for the results of measurements of the gray scale, you may notice a slight shift towards the green on the characteristic CIE below and to the right. Also there there is a slight excess of the level of green, blue and yellow colors, but overall very good color characteristics. The overall balance of colors is close to the standard Rec.709, measured brightness is good, and the total error is less than three.

After calibration

With such an accurate initial setup, calibrate 55JU6400 was a fairly simple task. Although Samsung has provided two and ten-point white balance adjustment, we had the two-point adjustment to balance all three primary colors. Gamma remained at 2.4, and the total error of the gray scale has become less than unity.

The control system chroma (CMS), which Samsung has equipped its TVs, works perfectly and allows you to configure primary and secondary colors with very high accuracy. There was a small red hue, which we could not fix it, but it was less than three, and the total balance of error was less than one.

The characteristic CIE at a lower intensity was very good for a TV in this price category. All secondary colors were set very close to default (which is important in the transmission, such as skin tones), as well as primary, although a small saturation appeared at 75 percent. However, in any case, this impressive color accuracy for TV starting price category.

 TV Samsung UE55JU6400

Input delay

Samsung spent a great job to reduce input lag in their TVs Ultra HD 4K, which was reflected in the low-cost models. However, if you are seriously addicted to computer games, you should engage the Game Mode on TV JU6400. The fact that in mode Movie Mode measured delay signal from this TV reached 124 ms, which is quite a lot. However, when you switch to Game Mode latency down to 28 ms, which makes 55JU6400 suitable for video games. The level of detail, which has UDH panel and high brightness images make the game a real pleasure, and a great screen size provides the effect of full immersion.

The sound quality

That fact that the TV 55JU6400 use direct LED lighting, and a positive impact on the quality of its sound. Deeper body will place larger speakers, and as a result, provide the best sound. Although the TV transmitters are directed downward, the result was very good and convincing forms 55JU6400 front soundstage, with good separation of stereo images due to the large size of the screen.

Built-in amplifier powerful enough to be loud without distortion, while too high a volume set all not worth it. 55JU6400 reproduces dialogue clearly enough for comfortable viewing of any television programs. With more complex soundtracks TV also handles well, but if the quality of the sound plays an important role for you, the best solution is to use an external audio system, such as the soundbar.

Image Quality

The fact that direct 55JU6400 used LED lights, says about the potentially better image uniformity, and this is confirmed in practice. The screen no spots, areas of stray light or reduced brightness as in cheaper models. Some disadvantage of this solution is the visibility of the LED illumination during panning over large areas of one color – for example, the blue sky and green football field. But this happens rarely and does not spoil the impression of the image quality 55JU6400.

Video Processing

Samsung Video processors usually work fine, and we expect the same result by 55JU6400 in our test. Our expectations were met, and deintereleys and scaling of the image on the TV performed perfectly and without visible distortion. 55JU6400 passed all tests for our normal operation of the video, and their results were excellent, regardless of what was the original content – standard or high definition. This fact is important, since the time when the foundation of our content will be Ultra HD 4K recording has not yet come, and in the near future, video upscaling lower resolution for such a TV will be very important.

Transmission of motion

As usual, we used our FPD Benchmark test disc to assess the transfer of motion resolution, and, as expected, 55JU6400 showed normal for LCD TVs result in 300 lines. However, we did not expect that the switch to Auto Motion Plus will not change in the permit. Typically, the frame interpolation function such as Auto Motion Plus, allows to increase the resolution to 1080p, but in this case no effect on its application was not. The only explanation for this – some software error, and we sent the report to the appropriate Samsung. However, it should be noted that the quality of this TV transmission of motion was excellent and without interpolation. When viewing a Blu-ray in 24p mode with system shutdown Auto Motion Plus TV 55JU6400 showed almost cinematic quality transmission of moving objects.

The black level and contrast

In TV 55JU6400 used VA-panel, but without the proprietary system of local extinction of LEDs. It will apply the full view of extinction, which means that when applying full-screen raster 0IRE lights turned off and we measured the brightness of 0,001 cd / m. Of course, this is not indicative of the normal image, so using 0IRE in windowed mode, we got the value of 0.06 cd / m. That matches the value that showed other TV Samsung, tested this year. 55JU6400 has a large reserve of brightness, easily reaching a value of 120 cd / square meters, and even 325 cd / sqm, when the level of illumination and contrast were set to maximum. Note that no support JavaScript 55JU6400 High Dynamic Range (HDR). When setting the brightness of 120 cd /m.kv. and the black level of 0.06 cd / sqm 55JU6400 provides a full range of contrast 2000: 1 ANSI contrast range of 1655: 1, which is an excellent result for the LCD TV.

In spite of the lack of local extinction backlight, the black level at 55JU6400 very good that It provides decent detail in bright areas, albeit at the expense of some loss of fine detail in dark scenes. The big disadvantage of all TVs Samsung, which we’ve tested this year, began viewing angles. While you are sitting exactly in the center of the screen, the perceived quality of the image is excellent, but it costs you to shift at least 10 degrees, it will drop significantly. If you move further away from the center of the screen, brightness, color balance and the black level will continue to deteriorate. This restriction technologies, in the case of the LCD, you have two options – a good black levels and viewing angles are small or poor black with wide viewing angles. The choice depends on where you are going to host 55JU6400, and note that this TV can not be rotated on its base.

The image quality 4K

We 55JU6400 tested on our test Ultra HD 4K material and were impressed by the picture quality, which is relatively inexpensive to provide this TV. The level of detail was amazing, and when viewed at an optimum angle accuracy and transfer pictures in black were almost ideal. So far, the number of 4K material is not so great, but there is no doubt that it will eventually grow and 55JU6400 can show their best qualities. Even taking into account that this model does not support technologies such as advanced color gamut and increase dynamic range.

Image quality Full HD

Although we only forward to seeing more 4K content (via Internet streaming, broadcast, or Blu-ray), 55JU6400 now able to provide an excellent image when using existing material. Although in this case we do not get all the benefits of 4K, excellent quality Videoprotsessing plays a role as de-interlacing and scaling of the image to full resolution matrix TV. As a result, when playing content from Amazon, Netflix and Now TV picture looks great, and makes a strong impression. 55JU6400 even able to provide a very decent image when using standard-definition content, especially given the fact that a large part of this picture is interpolated.

Of course, the best image quality when using 55JU6400 provides Blu-ray, especially new releases such as Interstellar and Inherent Vice, from which the picture looks very cinematic.
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 

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