Extra large screen, and high quality sound.
a technique of widescreen cinematography that produces an image approximately ten times larger than that from standard 35 mm film. "IMAX theaters" It's also best known for its 3D movie experiences!
Bigger screen, better pic quality
For the purpose of this theater ot means a bigger screen. Some movies have parts shot in the imax film standard which make even better use of the screen size. Also its a more expensive ticket.
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