What's the difference between imax hall and max hall?

First, IMAX:

1, IMAX, the abbreviation of Image Maximum, is a film projection system that can project larger and higher resolution than traditional films. 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 (about 5 stories high), but it can be played on a larger screen, and so far there are more IMAX screens.

2.IMAX screens are divided into three types: rectangular giant screen, IMAX-3D giant screen and spherical giant screen. Rectangular screens can be as high as seven or eight floors.

3. IMAX Digital: The latest IMAX technology released in 2008, the resolution of digital IMAX is 2K, because its resolution is much lower than that of film IMAX. In order to ensure that the clarity of the movie screen will not be reduced by enlarging the screen, the screen of digital IMAX has been reduced a lot. Its main advantage is that the brightness is doubled and it is compatible with 3D playback, but it can't reach the resolution of IMAX film. ?

Second, DMAX:

1, DMAX, or Digital Max, is the largest image projection system jointly developed by China Research Institute and China Film Group. It consists of two world-class digital projectors, a 2012m 2.4-gain metal screen, a circular polarization system, 3D glasses and a linear surround sound system, and a seat design with large slope, wide line spacing and low viewpoint.

2. The film used for 2.DMAX is ordinary 35mm film. To put it bluntly, it is actually the big screen of ordinary movies, because the movie is still that movie, and the projector is still that projector, but the screen is big. But most viewers think that the brightness of DMAX movies is much higher than that of ordinary 3D movies, because DMAX is played by two computers, so the brightness is higher.

Extended data

About IMAX:

1, IMAX film in order to greatly increase the resolution of the image, a special 65mm negative and its special camera were used to shoot, and then developed into 70mm 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, "15/70". 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.

2. 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

3. Because the traditional 70mm film is unstable after being enlarged more than 500 times (that is, full screen), IMAX specially adopts the "rolling ring" technology for film projection, 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 a vacuum state during the projection.

4.IMAX projector is fixed with screws, and four screws and gears fix the projector in a completely horizontal state. 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.

References:

Baidu encyclopedia: DMAX；; Baidu encyclopedia: IMAX