What's the difference between imax 3d and 3d?

How to choose the theater and seats when watching Avatar?

According to the reflection of experts and netizens, the choice can follow the following principles:

IMAX film version (such as China National Film Museum and Shanghai Peace Film Capital) > IMAX digital version (such as Beijing Shijingshan Wanda and UME Huaxing) > Dual-machine 3D digital version (such as Beijing Legend Times) > Sony 4K 3D digital version (such as Wangfujing New Dong 'an) > RealD stand-alone 3D digital version (Kodak, Shanghai Miracle City) > Other stand-alone 3D digital versions > 2D digital 2K version > 2D film version.

After choosing a cinema, consider the seats. If you choose IMAX version, you'd better choose the middle position at the back. If you choose the normal 3D version, you should choose the middle position of the first 3-4 rows. If you feel dizzy in 3D, you can choose the middle position in the back. If it is a 2D version, you can choose the position in the middle as far as possible, and there is not much difference before and after.

●●●●●●●● "Avatar" movie guide

The best time for Avatar to go to the toilet is the 56th minute, the 2nd hour 1 hour 57 minutes, the 2nd hour 13 minutes, and the 2nd hour 25 minutes. The duration of the movie is *** 168 minutes, and most people can only hold it for an hour and a half. Don't worry, you still have three chances to miss the first time, but the plot will not be unexpected anyway.

This movie didn't give you the so-called "sneaking to the toilet". In five minutes, you ... you'll completely forget about your bladder.

Don't waste money on popcorn. Even mechanical swallowing and chewing will distract your attention, and this movie requires you to concentrate all your spirit on the retina, bury your body deeply in your seat, and meet the flood of visual information nervously (flood, not feast)!

Before 3D glasses are big enough, please ask friends who wear glasses to wear contact lenses.

Want to see 3D 2D is a gun version, Blu-ray is a gun version, DVD is a gun version, and the gun version itself is a gun version ×4!

IMAX is not necessarily the best choice, it is dark.

Take a piece of glasses cloth, and the cinema may not help you clean 3D glasses.

Don't look at the virtual focus-you stare at the director's focus, or you will get dizzy and have a bad 3D impression of the virtual focus.

●●●●●●●● Anti-vertigo tips

1. Select the back row.

The "emperor's position" of 3D movies is in the front three or five rows. This distance can best feel the stereoscopic effect of the picture, but it will also increase the burden on the eyes, so if you are afraid of dizziness, it will be more comfortable to choose the back row.

Give your eyes a rest

Avatar lasted two and a half hours. Taking off 3D glasses every ten minutes and having a rest can relieve fatigue and relax nerves.

Take carsickness medicine

The doctor reminded the audience to consider their physical fitness when watching 3D movies. People with a history of dizziness, carsickness, seasickness and epilepsy should not watch it. If you must watch it, taking some anti-vertigo drugs before watching the movie and using drugs to inhibit the mechanism of dizziness in the brain can improve the discomfort caused by watching 3D pictures.

●●●●IMAX

IMAX (the abbreviation of image MAXimum, meaning "maximum image", which can be pronounced as "love max" in Chinese) is a film projection system with larger and higher resolution than traditional film. The whole system includes film copying, projector, sound system, screen and so on. IMAX specification shooting. The standard IMAX screen is 22 meters wide and 16 meters high, but it can be played on a larger screen. So far, there are more IMAX screens.

In order to strengthen the visual shock of the film. Before IMAX, there were two kinds of large-screen projection systems, Cinemascope and VistaVision, which affected the visibility due to complicated installation, difficult operation and unstable image quality. So they are not popular. Three Canadian inventors of IMAX (Graeme Ferguson, Roman Kroitor and Robert Kerr) also studied a multi-projector large-screen projection system similar to Cinemascope earlier, but their experiments at the 1967 Montreal World Expo were not ideal, and there were many technical problems, which prompted them to turn to develop a new large-screen projection system with a single projector and a single camera. Eventually IMAX was born.

In order to greatly improve the resolution of the image, IMAX film is shot with a special 65 mm negative and its special camera, and then developed into 70 mm film. The image size of traditional 70mm film is 48.5mm× 22. 1mm, while the image size of IMAX film is 69.6mm× 48.5mm, that is, the format of "15/70"-each frame of film. Therefore, the photosensitive area of IMAX film per frame is 10 times that of ordinary 35mm film and 3 times that of traditional 70mm film. This determines that the image projected on the "giant screen" is clearer and brighter than ordinary movies. The copy of this film is so heavy that it needs special lifting equipment or the strength of many people to move it when it is shown. Because the size of IMAX film is much larger than that of ordinary film, the film feeding speed of IMAX film is also three times that of ordinary film, and one frame is shown every 6 milliseconds. The film length shown once every1.7m, and every minute102.6m.. Therefore, the length of a two-hour IMAX movie is 12. 48632 . 6868686866 1

Because the traditional 70mm film is unstable after being magnified more than 500 times (that is, full screen), IMAX specially adopts the "rolling ring" technology to show the film, increases the compressed air device to speed up the film transmission, and places a cylindrical lens at the front end of the projector to keep the film in a vacuum state. The IMAX projector is fixed with screws, and the projector is fixed in a completely horizontal state by four screws and gears. IMAX projection system also offsets slight jitter during projection by adding cam control arm, and its shutter length is about 20% longer than that of traditional equipment. The light bulb of the projector is amazing. The light emitted by the IMAX projector with the maximum power (15 kW) can be seen even on the moon. Therefore, IMAX projection system is expensive, and its weight exceeds 1.8 tons.

IMAX projectors have the highest precision and the strongest power, reaching an unprecedented advanced level. The key to the reliability and stability of its operation is the unique "rolling L00P" film feeding technology. This technique is to make the film run horizontally like a wave. In the process of screening, each frame is firmly attached to the back of the lens through a vacuum device, so that the stability of the picture greatly exceeds any conventional standard, and the image is crystal clear. IMAX projector 15kW light box is so powerful that naked eyes can see the light spot it emits on the moon.

An important factor of IMAX experience is its sound. IMAX six-channel super sound system includes subwoofer channel. Sonics sound source equalization speaker system specially designed for IMAX cinema means that the volume and sound quality of every place in the cinema are exactly the same, and the audience can enjoy the same quality sound effect no matter where they sit. There are thousands of holes on the screen in order to make the sound spread unimpeded. At the same time, the seat design with large slope gives every audience an unobstructed view.

The structure of IMAX cinema is also very different from that of ordinary cinema. According to different shapes, IMAX screens are divided into rectangular screens and spherical screens. The standard IMAX screen size mentioned above refers to a rectangular screen, while the diameter of a spherical screen can reach 30 meters. The spherical screen mainly shows OmniMax (IMax Dome, formerly known as OmniMax). This kind of film is shot with a "fisheye" lens, so that the scene of 180 degree can be imaged on a flat film. Another fisheye lens can be used to make the panorama reappear on the screen.

Due to the high resolution of IMAX images, the audience can be closer to the screen, and generally all seats are within the height of one screen (while the seat span of ordinary traditional cinemas can reach 8~ 12 screens). Moreover, the inclination of the seats is larger than that of ordinary cinemas (the projection hall of the spherical screen has an inclination of 23 degrees), so that the audience can better face the center of the screen.

●●●●●●●●● About IMAX 3D

IMAX3D is the projection technology of IMAX stereoscopic movies. IMAX3D uses two sets of IMAX-specific 15/70 films, one for each eye, and provides two independent images through polarized filter glasses or infrared synchronization system with electronic glasses. Combined with IMAX giant screen, IMAX3D can produce realistic full-field stereoscopic effect.

IMAX 3D: Let you see, listen and feel more.

IMAX Experience(R) presented in 3D can bring you the most immersive viewing experience in the world, and fascinate millions of people around the world. Crystal clear and vivid stereo images, combined with top-notch surround sound system, make the audience feel as if they are in a movie.

The omni-directional high quality of IMAX 3D stereoscopic experience makes its image effect stand out in the world-creating the most authentic and immersive 3D effect ever. An important factor behind the miracle of IMAX 3D is the adoption of double membrane technology, which is far more advanced than the traditional "red and blue" analog 3D technology. The traditional analog 3D technology only puts the images of the left and right eyes on a piece of film, and the clarity and color are greatly reduced. IMAX 3D technology has no such regret at all. It not only adopts the world's largest film format (15/70), but also captures and displays images simultaneously through two independent films.

IMAX 3D camera

IMAX 3D camera is one of the highest resolution image acquisition cards in the world. It can record the imaging of the left eye and the right eye simultaneously on two 65mm wide films. IMAX 3D camera can shoot IMAX images with wide lens and high resolution.

IMAX3D projector

IMAX 3D projector projects two left and right eye films in 15/70 format onto the dedicated screen of IMAX 3D at the same time. The audience must wear IMAX 3D glasses and project the images of the left and right eyes to the left and right eyes respectively. IMAX cinemas use P3D glasses, which use polarized lenses to separate the imaging of the left and right eyes. The 15/70 film format used by IMAX is 10 times larger than the traditional 35mm film. 15/70 film format and its unique IMAX projection technology are two magic weapons for IMAX cinemas to obtain super image clarity and bright colors.

film

In IMAX cinema, professional design and barrier-free wide field of vision make you stay in the wonderful world on the screen all the time. The eight-layer IMAX 3D screen almost eliminates the discomfort and boundary contour of the small format 3D system. The screen coated with high-performance metal coating has a slight curvature and tilts slightly towards the audience, making the audience feel as if they are in a movie. The excellent sound quality of IMAX specially designed multi-channel stereo system gives unparalleled clarity and super shocking effect, which greatly improves the image effect.

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Chinese mainland IMAX cinema index

Beijing

China national film museum rectangular curtain 27× 21m.

The rectangular screen of Huaxing Cinema is 26× 18m.

Wanda Studios Shijingshan Store Rectangular Screen 22 × 13 (the first digital IMAX projection system in Asia)

Shanghai

Rectangular curtain wall/ball curtain of Shanghai Science and Technology Museum is 24.3×18.3m/23m.

The rectangular screen of Heping Cinema is 20× 15m.

Tianjin

The IMAX giant screen stereoscopic cinema in Jinwan Square of China Film Group is 22m× 13m.

Changchun

Chang Ying Century City IMAX Rectangular Curtain 21.8×13.4m.

Changchun Wanda Eurasia (upgraded to digital IMAX system)

Heilongjiang province

The ball curtain of Heilongjiang Science and Technology Museum is 23 meters long.

Guangdong

Dongguan Wanda Cinema Rectangular Screen 29 X 25

Dongguan Science and Technology Museum Ball Curtain 23 meters

Jiangsu Province

Wuxi world cinema19.1x10.59

Nanjing Youth Activity Center Ball Curtain 2 1m

Rectangular curtain wall of Suzhou Kewen Center 2 1m× 13m

Changsha

Wanda Cinema (Digital IMAX)

Yunnan Province

Kunming Shuncheng Wangfujing Broadway Studios IMAX Cinema 21m *12m (officially opened on 28 October 2009/kloc-0).

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List of IMAX cinemas in Hong Kong and Taiwan

Hong Kong

There are 278 seats in IMAX cinema of MegaBox Shopping Mall in Kowloon Bay.

Kowloon City Hong Kong UA Cinema IMAX Cinema Seats 300+

Taipei

Meihuazhi Cinema IMAX Cinema has a screen area of 609m2. seat

The number of seats in IMAX Hall (the first digital IMAX studio in Taiwan Province Province) of Taipei Rixin Weixiu Studio is 600+

●●●●●

What is a 3D movie? D is the prefix of English Dimension, and 3D refers to three-dimensional space. Internationally, 3D movies are used to represent stereoscopic movies.

The reason why human vision can distinguish distance is because of the difference between two eyes. People's eyes are about 5 cm apart, and nothing will have the same angle except aiming straight ahead. Although the gap is very small, it is transmitted to the brain through the retina, and the brain uses this tiny gap to generate the depth of distance, thus creating a three-dimensional sense. Although one eye can see objects, it is not easy to tell the distance between them. According to this principle, if the same scene is made into two images by using the difference between the two eyes, and then each eye sees its own image on one side, the depth of field can be stereoscopic through the retina. Various three-dimensional demonstration technologies also use this principle, which we call "polarization principle".

There are many forms of making 3D movies, among which polarized glasses method is widely used. It uses human eyes to observe the scenery, uses two parallel movie cameras to represent people's left and right eyes respectively, and shoots two movie pictures with tiny horizontal parallax at the same time. During screening, two films are respectively loaded into the left and right film projectors, and two polarizers with polarization axes of 90 degrees are respectively installed in front of the projection lens. The two projectors need to run synchronously and project the picture onto the metal screen at the same time to form a double image of the left image and the right image. When the audience wears special polarized glasses, the polarization axes of the left and right polarizers are perpendicular to each other and consistent with those in front of the projection lens; The viewer's left eye can only see the left image, and the right eye can only see the right image. The left and right images are superimposed on the retina through binocular convergence function, and the brain nerve produces stereoscopic vision effect. Show a coherent three-dimensional picture, let the audience feel that the scenery is coming, or enter the deep recess of the picture, which can produce a strong sense of "being there".