What is 3D effect?

Now when announcing almost every film premiere, we see on the poster the inscription "3D effect". This innovation has become widespread in our country very recently. However, the technology literally for a couple of years has earned itself a real popularity among visitors to cinemas. The three-dimensional image, a sense of presence and a lot of enthusiastic impressions are the main advantages of this effect. But what is 3D in its essence? How did the developers achieve such an unusual presentation of a seemingly flat image? Does such technology harm the human eye and brain? Let's figure it out.

The very name of 3D came from the abbreviated notion of "three-dimensional" or "three-dimensional", if translated into Russian. It means a special perception of the world around us through stereoscopic vision. Since each human eye transmits its own picture to the brain, they will differ slightly from each other. This can be easily verified by a small experiment. Close both eyes in turn, and you will immediately notice the difference. After all, there is a distance between them. But we do not perceive the image in a dual way, since the brain in a thousandths of a second converts the received information into a full-length picture. Here to you and natural technology 3D.

To the visitors of the cinema could feel the whole charm of this novelty, the film itself must be shot by a special method. This is done by means of two different cameras, which are located a short distance from each other, or with the help of one, but special. It has at once two lenses, allowing to capture everything happening as we see it with both eyes. When the footage is launched onto the screen, the person sees a blurred, as it were, a double image. To understand what 3D is, it will need special glasses that will connect the captured frames from different cameras into one single image. In this case, each eye should receive exactly the same picture, which is designed specifically for him. Depending on how the film was shot, the scene will either go deep into the screen, or slide directly onto the viewer.

Now 3D technology even penetrates into our homes. Manufacturers of equipment actively introduce it into their devices, which become adapted to the transmission of volumetric images. What is 3D at home? This is a review of movies specially shot on this technology on full-fledged TVs, stationary computers, tablets or widescreen smartphones. At the same time, the creators of such devices of the new generation can use a completely different technique for improving the devices. The most commonly used anaglyph glasses are familiar to everyone who at least once watched a 3D movie in the cinema. One of their glass is blue, and the other is red. It is this feature that makes it possible to delineate images intended for different eyes. With these glasses, you can enjoy the effect of "presence", even when viewing the movie on a conventional TV.

Speaking of special screens and monitors, it will not do without the technology of polarization. In this case, in addition to special glasses, you will need a new TV (or a computer monitor). It is quite logical that such 3D will cost you much more. After all, large-format technology with special screens has a fairly high cost. However, this technology is far from perfect, as a result of which the image may appear not quite clear or blur out edges.

The most expensive and high-quality option for a home are autostereoscopic displays. They do not require extra glasses, because they themselves convert the image into a 3D one. The effect of watching movies on such devices will be simply stunning.