Choosing a TV for the family is a difficult task, because it is acquired for a long time. In addition to the untwisted brands in the market of television technology, there are a lot of different companies offering a variety of models. Today 4k TV, which was first introduced to the world by Japanese company NHK in 2004, is becoming increasingly popular.
Which TVs support 4k?
Many of us, choosing to buy a new TV, want to purchase a high-quality device. Recently, the best screen was Full HD with a resolution of 1920x1080 pixels. At the beginning of the 21st century, an improved 4k or Ultra HD technology appeared, as it is also called. Now, to view home content in this capacity, you need 4K TVs, which are produced by such world producers as:
- Samsung;
- LG;
- Sony;
- Panasonic;
- Philips.
4k TVs - which is better?
For those who decide to choose a 4k TV, you should explore the advantages of these models. The picture, which is demonstrated on the Ultra HD screen, is more detailed and clearer, and the colors are more saturated and deeper compared to the same on Full HD, which helps to create the maximum effect of the presence of the viewer. Thin transitions of one shade to another on the screen of 4k modern TV allow the viewer to consider the variety of colors. The most high-quality models are known world brands.
Matrix 4k TVs
In the current market for 4k TVs, two types of matrices dominate: VA and IPS, which have the following advantages:
- The VA (Vertical Alignment) matrix aligns the image vertically. Its liquid crystals, located perpendicular to the surface of the TV screen, provide saturated colors. Free-moving crystals contribute to the fact that the image is not distorted when changing the viewing angle. TVs with such a matrix are excellent for rooms with poor lighting.
- The IPS (In-Plane Switching) matrix - in it all the crystals rotate simultaneously and are in the same plane parallel to the screen. It provides a large viewing angle, high definition and brightness, deep color shades. However, a TV with a resolution of 4k, which has such a matrix, is much more expensive than other models.
TV screen resolution 4k
Deciding to buy a 4k TV, you need to know what the resolution (the number of pixels or pixels that make up the image) from the model you have chosen. Television devices of the new generation 4k have a 3840x2160 screen extension, which is four times higher than the previous FullHD models. Since the pixels on this screen are much larger, and their dimensions are very small, we see a brighter and more realistic picture having clear outlines of all objects.
A TV with 4k resolution has a minimum screen aspect ratio of 16: 9. It is believed that the higher the resolution, the better the TV. However, this is not always the case. If a weak signal is received on a high-resolution TV, for example, on-air TV, then it requires more complex special processing, and the picture on the screen may be fuzzy. Therefore, when buying a 4k TV, be sure to check the store reception quality of the signal.
Rating 4k TVs
If you want to find out which 4k TV to choose, then you can do it by studying the rating of models from different manufacturers:
- LG 43UH603V - the most budgetary version, which has a 43-inch quality screen and a Smart TV system. Great for playing heavy video files.
- Samsung - UE50KU6000K - affordable TV with a large diagonal, which has uniform illumination of the entire screen and automatic brightness adjustment.
- LG OLED55C6V - this model experts consider one of the most popular among those that use HDR technology. The curved screen of this TV increases the effect of presence.
- Philips 49PUS7150 - the optimal model of home TV with a high-quality 3D display.
- SONY KD-65ZD9BU TV - perfectly shows in a bright room, while having the highest image quality.
How far is it safe to watch 4k TVs?
In order to determine at what distance to watch 4k TV, you need to decide where you put it and where the audience will sit. Depending on this distance and you can choose the appropriate diagonal of the TV, which will be comfortable and safe to watch the broadcasts. At the same time, experts argue that the larger the screen, the greater the distance from it to the viewer. Optimal viewing of a TV with a diagonal of 81 cm at a distance of 1.27 m is considered. If you sit down, you will not notice some small details, and closer - the picture will be grainy.
Setting up a 4k TV
Any new TV needs to be set up. To do this, you need to use the instruction manual that comes with this model. Many TVs with 4k support have several preset tuning modes, which can be used:
- warm;
- chill;
- standard;
- dynamic.
However, the last mode is not recommended to use, because it oversaturated the colors to the detriment of detail. The list of settings includes such indicators:
- Contrast is the required level of white color. It is best to adjust the contrast of the cloud image: first set it to the maximum, and then lower the level to achieve the required.
- Brightness is the amount of black that should be about 50%. It is convenient to adjust the brightness on any black image.
- Color - installed on the picture with a bright color palette. Then go to the frame with people's faces and achieve a more natural color.
- Sharpness - should be no more than 30%. To align it, select an image with smooth edges and increase this value until the halo begins around the contours.
Checking the 4k TV
When buying a 4k TV, you need to check it:
- Packages and complete sets - presence of cables, the control panel, protective films, the documentation.
- Check for broken pixels of the TV 4k is done like this: we first download the test pictures to the USB flash drive, connect it to the TV and carefully study the resulting image. The broken pixels can be detected on a monophonic screen in the form of contrast points.
- Evaluation of the uniformity of the backlight - there should be no noticeable gradients on the monophonic screen. Highlights on the perimeter of the screen are tested in a dark room, and possible contrast strips - on a homogeneous background.
- Checking the TV for grayscale is done dynamically on a gradient image. In this case, the transition of the shades should not be too sharp or blurry.