What is 4K?
4K TV, also known as Ultra HDTV, has 4 times as many tiny pixels as HDTV and 4 times as much as HDTV.
At the Consumer Electronics Fair a few weeks ago, 4K became the focus of everyone’s talk. The 4K screen that was exhibited publicly was more than enough to reach the moon. There are also 4K cameras, video cameras, computer monitors and even mobile phones.
But I bet that at least half of Americans have never heard of 4K. However, people with 4K TVs simply don't know how it works, what can be seen, and where we are on the global road to 4K?
So I decided to spend a week studying the 4K. I decided to collect 4K TVs of different prices from different vendors. In the same room, at the same time, I gave them a professional experience evaluation. You can also do this by installing a signal distributor so that they can play the same video at the same time.
4K TV, also known as Ultra HDTV, has 4 times as many tiny pixels as HDTV and 4 times as much as HDTV.
At the Consumer Electronics Fair a few weeks ago, 4K became the focus of everyone’s talk. The 4K screen that was exhibited publicly was more than enough to reach the moon. There are also 4K cameras, video cameras, computer monitors and even mobile phones.
But I bet that at least half of Americans have never heard of 4K. However, people with 4K TVs simply don't know how it works, what can be seen, and where we are on the global road to 4K?
So I decided to spend a week studying the 4K. I decided to collect 4K TVs of different prices from different vendors. In the same room, at the same time, I gave them a professional experience evaluation. You can also do this by installing a signal distributor so that they can play the same video at the same time.
I tried to play every possible video resource. One by one I did a comparison (I even put a high-definition TV, which was popular in 2014, into the contrast). I tried to watch TV at different distances. I also invited a group of people as staff officers.
Until the end of the experiment, I finally understood that we were in what position in the 4K era, and I was able to give everyone my opinion on whether it was safe and sensible to purchase 4K TV.
The following is what I learned.
Until the end of the experiment, I finally understood that we were in what position in the 4K era, and I was able to give everyone my opinion on whether it was safe and sensible to purchase 4K TV.
The following is what I learned.
Experience equipment
I tested 3 different 55-inch 4K Ultra HDTVs at different prices:
LG 55UB8200 (Price: $1200)
Sony 55X850B (Price: $1800)
Samsung 55HU9000 (Price: $3,200)
Best Buy dispatched three Geek Squad technicians to install and calibrate the TVs.
(As you may have realized, all the TV models displayed in the mall's showcase show its color saturation and brightness to the greatest extent possible, but the factual picture is not as colorful as it is presented. This is Businesses are trying to attract shoppers.However, once you buy a TV back home, you can't help but want to hire a professional to calibrate it through a calibrated DVD, or even do it yourself; You will never achieve the desired effect.)
When the calibration was completed, I was shocked. The pictures of these three TVs look almost fantastic and they are almost exactly the same. If given the appropriate adjustment and calibration, the $1200 TV screen is exactly the same as $3,200.
The above three televisions have reached the latest 4K television technology standards. If you want to buy a TV in a mall, it is very necessary to check the following three product features.
HDMI 2.0 is a type of interface for video resources. This interface has an improved transmission bandwidth, supports 60 frames of 4K HD, and will also expand movies similar to the Hobbit filming method in the future.
HDCP 2.2 is the latest 4K video high bandwidth content protection technology. If you don't have this protection, some of your video resources may play out as a black screen.
H.265 is the video encoding standard that Netflix uses to deliver its 4K movies. If your TV does not have H.265, you will not be able to join the Netflix 4K stream.
The three TVs I experimented with support WiFi connections and have access to a wide variety of online video and audio services like Netflix, You Tube, Amazon Instant Video, Hulu Plus, Pandora, Spotify, and more.
So what's the difference between the three experimental TVs? Here are some records:
Samsung 55HU9000: This expensive TV is a curved screen, its screen has radian. I was often confused by a concept that we spent almost a decade trying to hang the TV on the wall to make it flat enough; who asked them to bend? (And, they don't give more immersive feeling than a flat screen, unless you sit 18 feet away from the TV and enjoy it alone.)
This is Samsung's best 55-inch 4K TV. (Samsung has many other 4K TVs.) Its biggest highlights are: 6 Its processors and connectors are all in a separate metal junction box. As technology advances, you can replace it in the next few years. This box. (This design allows only a single cable to go from the box to the TV.) This should keep your display out of date.
There is also a pop-up camera on the top of the TV, suitable for web video chat.
Sony 55X850B: Sony is investing heavily in 4K. For example, it will soon introduce a $1,000 4K camcorder and a 4K Action Cam sport video camera. In addition, Sony also sells a 4K movie search library software, which will be described in detail below.
This TV is a low-end 4K TV, but it is really beautiful. The "citizens" who are worth more than they have put their speakers on the sides of the body. Although this is not a major loss for most TV fans, for them, anyway, the TV has a sound system. Now.
Like the other two models, this TV is not particularly thin compared to the current HDTV.
LG 55UB8200: This cheap TV has a great display. It has an almost invisible thin shade that will not affect your watching TV at all. It does not support 3D functionality (higher-end LG TV support), of course, this is not a big loss.
However, I still have two places that are not very satisfied with this TV. First, the two brackets on its base are too far apart. It is almost the widest place from top to bottom. If you don't have a big enough piece of furniture to put it, it will be very troublesome.
I and Geek Squad's technicians found that when using apps like Netfilx or Amazon on this TV, any calibration didn't affect the quality of the TV picture. We were all shocked. In fact, these online video resources do not give you any room to adjust the picture! The calibration of this TV only works on cable and Blu-ray input, and it is of no use to network video resources. How ridiculous.
What kind of sensory experience is 4K?
When you are still tangled in the end whether you want to buy a 4K TV, what kind of sensory experience that 4K TV can bring to you will be a huge factor. Netflix, You Tube, Blu-ray, cable TV, satellite, hard disk, each kind of resource is very different.
Here is the answer you want:
4K film and television programs. When your 4K TV shows are filmed on a 4K camera, you immediately feel the light. That looks pretty good. Intoxicating colors, incredible sharpness, and subtle black shades. The image is clear and you can cut tomatoes.
I watched a sample of Netflix's natural beauty with my family and we were stunned. What I mean by this is that the close-up of the flowers is too realistic and you will feel that you are allergic to pollen.
Netflix also has 4K native "The Deadly Addict" and "The House of Cards." This is really excellent.
And Netflix's 4K video is highly compressed, which means that they use less data to draw a picture; in fact, 4K content can look better.
Similarly, I also tested Sony's FMP-X10 player, which can be used for rental ($8) or purchase ($30) of a complete, uncompressed movie. If you want to download a movie like this, it will take a lot of time (about 8 hours), but believe me, you have never seen such a high-quality picture.
Of course, according to a Digital Trends test, this is because 4K TVs use four small pixels as a unit pixel, while previous high-definition televisions used only a small pixel as a unit pixel. In simple terms, 4K. TVs are 4 times more pixels than HDTVs, and their resolution is naturally increased by 4 times.
4K scans for imported movies and TV shows: Netflix, Amazon, M-Go and other companies now have another "4K" video that was shot before the 4K camera was invented. They are input by a 4K scan in some way. However, contrary to expectations, this process will not miraculously produce the same resolution as native movies.
It seems to me and the testers that there is no advantage in viewing these on 4K TVs.
In fact, on 4K television, many scenes actually look a bit more subtle, showing a variegated, mottled feeling, which to some extent reveals the process of amplification, they try to create something that does not exist in the original The original pixels in the movie to achieve amplification, at least I think so.
Blu-ray, DVD, Cable TV: In the video world, all non-4K videos will look the same on 4K TVs, or slightly worse. Remember to watch standard-definition video. For example, would you use a new high-definition television to watch home videos? Of course not. In that case it looks too bad. Even worse than watching on an ordinary old TV.
Common problem: Your TV will automatically upgrade the video, by detecting the pixels in the video screen, calculate the most suitable color, and convert it to 4K. In general, the effect of the conversion is not as good as the original effect.
Optical resolution problem
Many commentators praised 4K as flawless. The resolution of 4K TV is so good that the human eye can't see any difference at normal viewing distance. This table shows everything.
In other words, if you sit on a 4K TV less than 60 inches away from the screen 8 feet (more than 2.4 meters), you can't see any difference in clarity.
Therefore, it is stupid to buy a new TV in order to sit closer and see it more clearly.
From another point of view: Even if you do not move your sofa closer to the TV, for HDTVs, the high resolution of the 4K TV means that you can achieve greater clarity without having to buy a larger size. Demand.
For example, you probably don't want to see a 70-inch TV 8 feet away. You will see a “gate-like screen†(ie you can see one pixel at a time). Instead, professionals will advise you to buy a 55-inch.
The 4K HD resolution means that you will not see those pixels when you look at the same 70-inch TV.
Is it a good time to buy 4K?
There are very few 4K TV programs. A year ago, 4K content was basically zero. Now, more and more movie libraries provide 4K movie download and play. By the end of this year, there will be a lot of movies to watch. This year, 4K will support all previously absent content carriers on the list: cable television, satellites, optical discs, and sports broadcasts.
And, now the price of 4K TV is about 35% higher than HDTV. But a year ago, the price of 4K was 700% higher. Is such a premium worth paid? Remember, what you want to buy is a TV that you watch in the next 10 years.
Below is a decision tree that answers your question. "Should I buy a 4K TV now?
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