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As critics and historians we must not fall for the inevitable argument that positions IMAX as a revolution in cinema technology and aesthetics. So far, IMAX has been with us for forty years and is only now making waves in Hollywood’s swimming pool. As home cinemas become more prevalent and more impressive — and multiplexes become less immersive and impressive – IMAX is a format that continues to “wow” audiences.
Benjamin Wright - On IMAX and Hollywood
The Fuss
IMAX is the Buzz word of the media industry at the moment, giving us all the opinion that it is a brand new inovative technology.
IMAX was formed as a successful company by Messers Ferguson, Kerr and Kroitor in 1967 in Canada. The first system was unveiled in Canada in 1967 with the first film shown in 1970 in Japan for the World Expo of that year.
Tiger Child
The film was 17 minutes long and was directed by Donald Brittain, the point of this film was to show what IMAX could do.
The openning of the first Perminent IMAX was made in Toronto Canada in 1971
As of 31 December 2013, there are 837 IMAX theatres in 57 countries.
The Technology
The format boasts an image surface area that is up to ten times the size of normal 35mm film. Using 70mm film turned on its side with 15 perforations per frame, the frame size is square-shaped (1.34:1) as opposed to the wider processes of standard 35mm film. With such a large frame surface area, more light is capable of striking the negative, which results in sharper images with less grain.
It might surprise you to know that many films don't arrive at the Theatre pre-assembled. As with the case of Transformers 2, it arrived in eight rather ordinary looking cardboard boxes — containing 45 separate reels. Each reel lasts only three to four minutes on screen. The reels are then spliced together by our projection team here on site — a job taking about eight hours.
Our films screen at 24 frames per second. Each frame is more than 70mm wide... meaning that 1.7 metres of film pass through the projector every second
The pictures below give you a rare behind-the-scenes look at the process of assembling these giant prints before opening night...
Largest IMAX in the World Blog (Sydney, Australia)
Preparing the film
Preparing to cut off the leader of reel
About to wind a reel
Making the join of reels 8 and 9. In the background you can see stored some of our many other 45 minute film titles.
Preparing for a join of two reels
Applying splicing tape
Checking the join before winding on another reel
Applying splicing tape
Viewing 15perf/70mm film on the lightbox
Why hasn’t IMAX fully partened with Hollywood studios and filmmakers?
"The IMAX format imposes particular possibilities and limitations. Since the viewer sits lower in relation to the IMAX screen than in a conventional theatre, the frame’s centre lies about a third of the way up from the bottom of the screen. Close-ups therefore need plenty of headroom. While long shots can be framed wider than usual, the movement from extreme long shot to medium close-up can be very condensed and the screen’s enormity cannot tolerate grainy or irresolute images. It is interesting to note that one of the difficulties (or challenges) the IMAX format poses have provoked reactions very similar to those expressed by directors working in early CinemaScope … Longer pacing and the large frame are ideal for the wide-world films IMAX produces but they send acting, dialogue and emotional scenes into the wrong orbit. Quick cuts are a rarity in IMAX, because they would subject the audience to severe jolts and probably violent nausea."
Tara Wollen
There are other concerns that Wollen does not mention. First, there is the issue of expense. It’s very expensive to shoot in the 15/70mm format and to distribute hundreds if not thousands of prints to theaters.
Second, it’s noisy. IMAX cameras are notoriously loud, since they must feed the large negative through the camera at 24 fps. As a result, dialogue is virtually impossible record on set, especially if the camera is close to an actor reading her lines.
Lastly, the IMAX cameras are heavy. Hand-held shots are hard, if not impossible, to achieve, which leaves filmmakers with a more limited stylistic palette; crane shots, static shots, and tracking shots notwithstanding.
http://www.imax.com.au/blog/2009/06/getting-it-together-for-the-big-screen/
http://en.wikipedia.org/wiki/IMAX
http://aspectratio.wordpress.com/2008/07/23/on-imax-and-hollywood/