Where does this come from, and can I check it?

The format runs film sideways through the camera at 15 perforations a frame. The figure is taken from IMAX, which is linked in full on this page. Every fact on Mondo Knows names its source rather than repeating an unsourced claim.

Is this really a movies & tv fact?

Yes. It sits on the Movies & TV shelf, one of 2,600 sourced facts grouped into space, animals, the human body, history, science and more. Category pages collect every fact in the same field.

What else can I read about it?

The links under the fact point to a quiz, game, puzzle or calculator on the same subject, and the shelf below shows related facts. The wording here is original, and quoted phrases are marked as quotations.

Mondo Knows Facts

An IMAX frame is about ten times larger

The format runs film sideways through the camera at 15 perforations a frame IMAX cameras pull 65mm film horizontally, so each frame is 15 perforations wide instead of the usual four. That makes the negative roughly ten times the area of a 35mm frame, which is why IMAX prints look so clean on a giant screen. The system was developed in Canada and first demonstrated at Expo 70 in Osaka. It sits in Mondo's movies & tv collection, one of 200 facts that each trace back to the reference below.

Where this comes from

IMAX

Facts that can change over time are reviewed and updated. If something here looks wrong, Mondo would rather know than be confidently incorrect.

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More facts like this

Safety film replaced nitrate in the 1950sAcetate stock burned slowly, though it decayed into vinegar over time Some films are shot with three perforations a frameUsing less film per frame cuts stock costs and allows longer takes Kodak's 16mm film was launched for amateursKodak launched the smaller gauge in 1923 for hobbyists and schools Super 35 crops the picture for widescreenThe negative is exposed full height and masked to a wide shape later Optical sound is printed beside the pictureA wavering line of light and dark runs down the edge of every frame Seventy millimetre prints carried magnetic soundStrips of iron oxide were glued to the edges to hold six audio tracks

Tags: imax, film-formats, canada

An IMAX frame is about ten times larger: the short answers

Where does this come from, and can I check it?: The format runs film sideways through the camera at 15 perforations a frame. The figure is taken from IMAX, which is linked in full on this page. Every fact on Mondo Knows names its source rather than repeating an unsourced claim.
Is this really a movies & tv fact?: Yes. It sits on the Movies & TV shelf, one of 2,600 sourced facts grouped into space, animals, the human body, history, science and more. Category pages collect every fact in the same field.
What else can I read about it?: The links under the fact point to a quiz, game, puzzle or calculator on the same subject, and the shelf below shows related facts. The wording here is original, and quoted phrases are marked as quotations.