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IMAX 3D – another new cinema experience December 25, 2009

Posted by lumierre9 in chit-chat.
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yesterday i watched the new movie Avatar in IMAX 3D…for tokyo area, it’s only available in 109cinemas kawasaki, and fortunately it’s still relatively close to my campus and dorm…the ticket price is more expensive though, 2200 yen for this movie (kinda varied for each movies)…

Avatar IMAX 3D

for you who don’t know about IMAX, here’s the explanation taken from wikipedia:

IMAX (short for Image MAXimum) is a motion picture film format and projection standard created by Canada’s IMAX Corporation. The traditional version of IMAX has the capacity to record and display images of far greater size and resolution than conventional film systems. A standard IMAX screen is 22 metres (72 ft) wide and 16.1 metres (53 ft) high, but can vary. The world’s largest cinema screen and IMAX screen is in the LG IMAX theatre in Darling Harbour, Sydney. It is 29.42m (approximately 8 stories) high by 35.73m wide — covering an area of more than 1,015 square metres.

IMAX comparison

The intent of IMAX is to dramatically increase the resolution of the image by using a much larger film frame. To achieve this, 65 mm film stock is run horizontally through the cameras. While traditional 65 mm film has an image area that is 48.5 mm wide and 22.1 mm tall (for Todd-AO), in IMAX the image is 69.6 mm wide and 48.5 mm tall. In order to expose at standard film speed of 24 frames per second, three times as much film needs to move through the camera each second.

so, in short, the screen size is bigger (around two times bigger than normal one) and the frame size is also bigger so it produces higher resolution picture…it’s like watching a very huge HD (high definition) movie ^^

and about IMAX 3D itself, still from the same source:

To create the illusion of three-dimensional depth, the IMAX 3D process uses two camera lenses to represent the left and right eyes. The two lenses are separated by an interocular distance of 64 mm (2.5″), the average distance between a human’s eyes. By recording on two separate rolls of film for the left and right eyes, and then projecting them simultaneously, viewers can be tricked into seeing a 3D image on a 2D screen. The IMAX 3D camera is cumbersome, weighing over 113 kg/250lbs. This makes it difficult to film on-location documentaries.

There are two methods to creating the 3D illusion in the theatre. The first involves polarization During projection, the left and right eye images are polarized perpendicular to one another (or right-hand and left-hand circular polarization is used) as they are projected onto the IMAX screen. By wearing special eyeglasses with lenses polarized in their respective directions to match the projection, the left eye image can be viewed only by the left eye since the polarization of the left lens will cancel out that of the right eye projection, and the right eye image can be viewed only by the right eye since the polarization of the right lens will cancel out that of the left eye projection. Another method for 3D projection involves LCD shutter glasses. These glasses contain LCD panels which are synchronised to the projector which alternates rapidly at 96 frames per second between displaying the left and right images which are momentarily viewed by the appropriate eye by allowing that eye’s panel to become transparent while the other remains opaque. While the panels within these active-shutter 3D glasses alternate at 96 frames per second, the actual film is displayed at 24 frames per second.

and this avatar movie used a Pace/Cameron Fusion 3D Camera System, invented by Vince Pace and James Cameron…yes, James Cameron, the director himself invented the camera…very cool…i want to know more about it, but it seems i can’t find much information about it, and the internet here itself kinda weird lately, i wanted to open the Pace website but the flash just freezed on “100%”…

my impression after watching this movie in IMAX 3D: it feels like seeing a huge transparent box in front of me and some real people are playing the movie inside the box…but kinda tiring though wearing the 3D glasses ^^ but it’s worth it for 2200 yen, especially for this long but very cool movie (i will talk about the movie itself later *hopefully*)…



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