Digression
As the re-test product of Zhang Dama's first wholesale cloth, I had the privilege of gaining this opportunity and got this opportunity. During this period, he learned that the delivery cycle may be extended, so he waited patiently and finally received the goods within 20 days. After seeing the gift card shocked, S50 Air became X50 Air, and then communicated with Aunt Zhang. As expected, Aunt Zhang informed her through communication with Leighton and meat. Although it was wrong, she did not need to return. So this Article evaluation object becomes X50 Air (full version), please forgive me.
4K technology
Before product evaluation, it is still necessary to briefly introduce the concept of 4K.
According to the standards defined by the International Telecommunication Union (ITU), the 4K resolution is and the aspect ratio is 16:9. According to this standard, the progressive scanning line of the display device under this specification can reach 2160, which is what we often say 2160P. With the standard 4K resolution, the total number of pixels can reach 4 times the HD resolution of. In May 2012, the International Telecommunication Union issued the "Ultra HDTV UHDTV" (or "Ultra HDTV") standard recommendation, which calls a television with a screen resolution of 3840×2160 (4K×2K) and above. HDTV, the industry is also referred to as 4K TV.
With the panel technology innovation, 4K display devices have ushered in a wave of significant price adjustment since the end of 2013. The difference between the low-end 4K devices and the original 1080P devices is very low. It is worth mentioning that Samsung and LG jointly initiated RGBW. Technology means that in addition to the original RGB, a sub-pixel, white (W), is added to the pixel. With the increase of sub-pixels, RGBW4K panels can also achieve higher resolution. Samsung Electronics refers to its RGBW panel as GreenUHD and LGDisplay as G+UHD. The so-called “fake 4K†debated by the industry in the first half of the year comes from this. Most of the low-cost 4K TVs in the market use RGBW. You must first make a decision on related parameters before purchasing related equipment.
Characteristic parameters
X50 Air is LeTV’s new 4K resolution super TV this year. The biggest difference from the previous S50 is that the panel resolution has reached the 4K standard, and the internal hardware has also been upgraded accordingly. The official version is divided into the full version and the added version. The Art Version (C Lo Edition), with an additional edition of RMB 500, is mainly an increase of Bluetooth components and independent subwoofers, thinner and more transparent backs, etc. Personally think that this 500 yuan is slightly weaker than the price/performance ratio. Normal use of the full version is complete. Enough to use.
Mstar 6A918's biggest advantage of this SOC is to support the H265 hard solution, which is too important for a 4K device. The biggest problem with the previous enhanced version of the millet box is this.
As one of the major video content providers in China, I think this is LeTV's biggest advantage. LeTV also wrote “I'm not a TV but a complete big screen ecosystem†in the boot screen. Understand that hardware is too easy to duplicate, and content advantages will become more apparent in the future competition.
Based on the Android 4.2 custom system, the overall logic is still Metro style, each difference is not too big, some of LeTV's customization features more perfect.
From the configuration point of view, a very standard 4K resolution Andrews system smart TV, the only regret is that HDMI does not use the 2.0 standard to support 4K 60Hz, after all, the price is placed here, but also helpless.
Out of the box appearance
If you use ordinary pre-purchase, I am afraid that in August this year can not complete this evaluation, the gift card is considered to have opened the back door.
From the order to the warehouse are very fast, 3 days to receive goods.
The box looks large, but it is not really heavy.
July 4 Qingdao factory.
Continue to cooperate with entertainment programs, including ticket raffle tickets.
The first thing out of the box, the first to install the base, a few screws to complete the screw, it is convenient, late considering the placement, or use the pylons.
Compared with the previous Hitachi 50-inch plasma flagship, it looks like a small circle, in fact, because the frame is thin.
Accessories list, 2 remote control 2 pairs of glasses is quite kind, there are two year membership card, in fact, to buy cheaper in other channels, the camera must be purchased separately.
Which of these personal preferences is used, the older ones are more suitable for the traditional remote control, and LeTV should be considered as such.
Feature label, for beauty, or tear it.
Side view, really thin, leading to the rack, behind the plug more laborious.
The other side is a physical button, and the power can be pressed completely off.
A USB port is left at the top and the camera can be plugged in here.
No transparent panels are used behind the standard version.
There are two rows of connectors on the sides and bottom.
The slot for installing the super song king needs to be purchased separately.
The power cord common to ordinary monitors is relatively thin.
After power-on, the logo white is on in standby mode, and the logo is still white after power-on. This just increases the brightness. There is room for improvement in this setting. The red, white, or red and blue Led instructions of the traditional TV are better, and they are not used for a period of time. Clear boot and standby.
Screen debugging
As for the problem of true and false 4K, the X50 Air uses a standard 4K panel, model V500DK2-KS1, a contrast ratio of 4000:1, a response time of 9.5MS, a refresh rate of 120HZ, and a brightness of 400. Nite, with a viewing angle of 176 degrees and a panel type of SUPER MVA, determines the standard RGB after magnifying the lattice.
Both the PC and the MAC can set the resolution to, the so-called peer-to-peer display, and then complained about when the giant, high-DPI compatibility problem is a head.
Pure color test, the corner light leakage is more obvious, not under the state of color, the color performance is acceptable.
The biggest problem is grayscale and color transitions, which is a common problem for low-end high-resolution screen panels.
First, as a computer monitor for color correction, due to brightness and line of sight problems, it is not recommended for long-term use as a monitor.
Although it is a low-end 4K screen, the sRGB color gamut performs well.
As a TV, it still needs HCFR to cooperate with the final school color.
The default brightness of 100 people feel too dazzling, in the school before the color, to reduce the brightness to 50, it is a pity that LeTV provides too few options to adjust, some options do not change the data too much.
The most influential option for the entire screen is “Color temperature adjustment.†After adjusting to warm colors, the red, green, and blue colors enter a relatively balanced state.
The above settings are for reference only. The remaining options below have no effect. The color temperature can be changed to warm.
Because the content of the test is 1080P, it may be due to the problem that point-to-point cannot be displayed, and lines appear to be stuck together.
Under high-speed movement, it is proved that there will be afterimages.
Grayscale performance is indeed more general.
In contrast, the color is still relatively flattering.
Input terminal test
First came the cable set-top box, the greasy feel of LCD is congenitally deficient, HD channels are acceptable, and there is a large gap between SD channels and plasma.
Another group of plasma display effects may not be apparent on the picture. On the look and feel, the plasma TV shows a lot of strength.
PS4 access test, FIFA14 first, as the Android-based smart TV, the biggest weakness has been exposed - delay, the game, especially in the audience perspective can feel very similar to the phenomenon of dropped frames.
In 2K, the phenomenon of dropping frames like the FIFA frame is basically absent, but the problem of input delay is exposed, and the shot is always not pressed.
All games with high input accuracy can experience a certain delay, so it is not recommended to use the X50 Air as a game video output device.
Switching to the XBOX platform, the delay in testing, whether it is in fitness or sports, the input delay feels higher than the average device.
Zombies and Romans feel the same way.
McGonagall's set-top box test is similar to that of a cable TV set-top box. The effect of watching TV is not as good as that of traditional and plasma TVs.
Millet box enhanced test, resolution can be set to 4K.
Performance Testing
Do not expect too much, and millet box enhanced version of the SOC is similar, the advantage is to support the H265.
Although the wireless network card is dual-band, but the performance is not very good, playing NAS Blu-ray or 1080P source is best to use cable.
External 4K video playback test, roast duck beauty video is very smooth, the effect is very good, but another thigh era MV only sound no image, may be a coding problem, only looking forward to late system updates can improve video decoding.
In the case of not using the app, the memory is basically around 50%, and after app opens, it will rise to 70-80%, which is still relatively tight.
System test
The system is divided into 5 sections, the input source (provides the display of the access device), the search section (which can search for video content via text and voice), and the carousel section (Lokse's own 24-hour uninterrupted video channel, with a member broadcasting function) , LeTV TV version of the channel (that is, the video content in the APP), the application board (all types of applications that come with it, you can also install third-party applications, APP applications with 1080P display)
The system update is divided into a stable version and a development version. The difference between January 1 and Monday is more.
With the TV QQ, you can video chat after accessing the camera.
With somatosensory games, it's better than nothing.
Comes with calendar and message center.
Supports multiple video push methods, and can also support off-line download of LeEco client content.
The skin shops and application stores that come with them still use third parties, such as sofa butlers.
Supports multiple file transfer protocols, and NAS and other devices can be connected for use.
Naturally does not support the original disk playback, the embedded subtitle support for the mts file is not perfect enough, also has automatic matching network subtitles.
4K content
I think that personal requirements are still relatively high, but I still want to give LeTV 4K content provided 8 points (out of 10 points), the existing quantity and quality completely exceed my expectations, although the 4K bit rate is not high (10M Bandwidth requirements) should be the most abundant 4K video library in the country, and it is constantly being updated. There are also a large number of other 1080P and HD video content, or we expect the official to improve the 4K bit rate.
3D test
The video content is a little less than 4K, but the 3D effect makes me very surprised. Automatic recognition is turned on automatically, and the glasses are a little thin.
to sum up
Advantages: 4K resolution, industrial design and workmanship is acceptable, cheap, as long as you are willing to be able to buy, the screen color is pleasing, support H265, a lot of music video resources, Android third-party applications, such as scalability.
Disadvantages: Not using HDMI 2.0, poor grayscale display and color transitions, and latency caused by the Android system mechanism.
Applicable people: Those who are ready to use as audio and video center playback equipment, apparently X50 is not suitable for you, the traditional high-definition television + set-top box is more appropriate; and for people with low video output quality, obviously the X50 is an integrated video Ecological output weapon, for this part of the crowd, I strongly recommend it.