| Welcome to Sprocket School! This project is maintained by volunteer editors. Learn more about how this works. |
70mm
70mm is the largest standard exhibition film gauge.
- aspect ratios
- sound formats
- dts discs
- handling of mag prints/degaussing
IMAX
IMAX is a 70mm film format on which the image is printed horizontally, resulting in a much larger filmed image than conventional 70mm. It's often referred to as 15/70, 15 being the number of perforations in a single frame.
-
A frame of IMAX film.
-
Related Articles
Resources
Images of Various Aspect Ratios and Sound Formats, 70mm
-
Frames from a 70mm print of Aliens. Blow-up from 35mm, aspect ratio 1.85, magnetic audio track.
-
Frames from a 70mm print of It's a Mad, Mad, Mad, Mad World. Aspect ratio is 2.76:1 (Ultra Panavision) with a DTS audio track.
-
Frames from a 70mm print of 2001:A Space Odyssey. Aspect ratio 2.2:1 with magnetic audio track
-
Alignment chart from a 70mm print of Inherent Vice. Blow-up from 35mm, aspect ratio 1.85
-
Inspecting a 70mm print of West Side Story. Aspect ratio 2.2:1, DTS audio track
-
Boston Light and Sound 5/70 test film on screen
