From the screen material and size, both of them are metal screens with high brightness gain, but the size standards are slightly different. The giant screen cinema in China uses a huge metal screen with a width of more than 20m *12m, while the standard IMAX screen is 22m *16m. However, due to limited space, some screens can not meet the minimum requirements of giant screen and IMAX. The minimum screen width of IMAX is only 14m, and the domestic giant screen is 17m.
Judging from the brightness standard, Chen Jingmin, general manager of China Film Digital Giant Screen (Beijing) Co., Ltd. said that at present, China's giant screen system has developed to the fourth generation, and the original xenon lamp equipment can reach 5FL in (hours). Under the laser light source, the brightness can be constant above 10 fl in (hours). The brightness requirement of giant screen is 2D movie brightness14fl+/-3fl; The brightness of a 3D movie is 7FL _ 14FL. There is no official data on the brightness standard of IMAX cinemas, but some insiders said that the brightness of some IMAX cinemas could not reach the original standard due to aging equipment or untimely maintenance.
From the sound point of view, Chen Jingmin said that the unique sound system of China Giant Screen supports a variety of international advanced point source sound formats, which is absolutely superior to other brands in the same industry.
From the perspective of projector equipment, China's giant screen system conforms to Hollywood DCI standard, and adopts customized projectors with international leading technology, while some projector technologies of IMAX also adopt the same technology, which shows that there is little difference in hardware.
Hardware and technology: there is little difference between them. Some IMAX theaters may face the risk of aging equipment.
IMAX and China Giant Screen CGS belong to the high-end giant screen format field of PLF, and the solutions of this category usually have four commonalities:
Customized dual camera projection system is used for 2D and 3D film projection;
Adopt dual-engine image optimization technology and have special core components of projection system;
Exclusive film master;
Strong brand added value.
Cost and business model: The cost of installing Chinese giant screen is about half that of IMAX.
Cost is also a very important evaluation index. Chen Jingmin revealed that the current cost of investing in a giant screen system is about 4.5 million yuan, which will be different according to the configuration of light sources and sounds. The cycle of average recovery cost is 2-3 years. At present, the annual box office of China's giant screen cinemas exceeds 3 million. It is reported that the current installation cost of an IMAX system is about 9 million, which is about twice that of the giant screen.
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The projection system of "China Giant Screen" was independently developed by China people. The brightness of Chinese giant screen is nearly 15% higher than that of foreign brands. Dual-computer images overlap to sub-pixel level; Image optimization increases the functions of uniformity, color and contrast adjustment; 13. 1 Multi-channel to create high-end stereo enjoyment.
Image Maximum (IMAX, the abbreviation of image maximum) is a film projection system, which can project larger and higher resolution films 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, but it can be played on a larger screen, so far there are more IMAX screens.
References:
How does Chinese giant screen compete with IMAX- Sohu Technology IMAX-Baidu Encyclopedia Chinese giant screen-Baidu Encyclopedia