Three dimensions (3D)
Man needs two eyes to see in three dimensions; similarly, IMAX® 3D needs 2 cameras, several centimetres part, filming the same image.
The IMAX® 3D projection system is made up of 2 projectors (projecting the separate left-eye and right-eye images onto the screen) via polarized lenses
(i.e. special filters).
The audience must wear 3D special glasses which have the same polarizer alignment as the projectors; each eye only catches the images projected by one projector... that way, the viewer enjoys "three-dimensional vision".