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Shackleton's Antarctic Adventure is a giant-screen film, meaning that it will be shown only in giant-screen theaters, such as IMAX® and Extreme Screen theaters, and was filmed on giant-screen film by giant-screen cameras.
What is a giant-screen theater?
Typically blending education with entertainment, the films shown in giant-screen theaters offer audience members the opportunity to visit fantastic locations around the globe and share in uncommon experiences. With Shackleton's Antarctic Adventure, viewers will not only be immersed in the barren, yet beautiful Antarctic, an environment where they wouldn't ordinarily be able to go; they also will be transported back in time to experience what has been called the greatest survival story of all time.
What makes this extraordinary realism possible?
15-perforation/70mm film is also three times larger than standard 70mm film. In fact, in the late 1960s, the inventors of the IMAX motion-picture format, the one used by the majority of the world's giant-screen theaters, took a standard 5-perforation/70mm film frame; turned it on its side, so its perforations ran along the top and bottom of the frame, rather than its sides; increased its size by three; and then created a projection system capable of projecting this new film format (which is done horizontallyrather than the traditional vertical method).
What do these film-frame facts mean to giant-screen theatergoers?
How is this super-sized film projected?
The light source for the IMAX projector is a 15,000-watt Xenon bulb that is stronger than the 12,000-watt bulbs originally designed as searchlights for U.S. Army helicopters or the lights used by NASA to illuminate the Space Shuttle launching pad. The bulb is water-cooled and lasts about three months.
The IMAX projection system has a massive lens and shutter, which transmits one-third more light than shutters in conventional projectors. The film moves through the projector in a special "rolling loop" projection system that uses compressed air instead of mechanical sprockets to advance the film in a gentle waving or rolling action.
During projection, each frame is positioned on fixed registration pins. The film is held firmly against the rear element of the projection lens by a vacuum. The result is picture and focus steadiness far above normal standards and previously unattained in giant-screen formats. The mechanism is so gentle that a film can be shown 2,000 times without significant wear.
What about giant-screen sound?
With an IMAX sound system, for example, the high-fidelity, six-channel sound has four screen channels, two surround channels and a sub-bass system, providing depth to the sound. Visitors feel, as well as hear and see, the action. If a train is racing across the screen, the sound follows the path of the train. Adventure scenes seem real because of the depth and breadth of sound in motion.
In Shackleton's Antarctic Adventure, the soundtrack complements each and every image, for example, with the sounds of the crunching of the pack ice in the Weddell Sea or the hurricane winds and waves that Shackleton and his crew faced on their lifeboat journey to South Georgia Island.
How is a giant-screen film shot?
More than 150 films, ranging from seven to 90 minutes, have been made for giant-screen theaters. More than 600 million people around the world have seen a giant-screen film since the giant-screen motion-picture format was invented more than 30 years ago.
Photo Credits: © 2000 Stephen Venables