35 mm movie projector in operation
Working principle of a Maltese cross or Geneva drive
Simulation of a spinning zoopraxiscope
Animation of a rotating shutter. The film is transported one frame when the shutter is blocking illumination of the film.
An early projector and seats from a movie theater
Film advance mechanism in the Soviet Luch-2 8mm film projector, based on a Reuleaux triangle.
1910's 35mm hand-cranked tinplate toy movie projector manufactured by Leonhard Müller in Nuremberg, Germany.
35 mm Kinoton FP30ST movie projector, with parts labeled. (Click thumbnail for larger text.)
Mechanical sequence when image is shown twice and then advanced. 
Outer sprockets rotate continuously while the frame advance sprockets are controlled by the mechanism shown – a Geneva drive.
Imaging lens Diastar of an Askania 35 mm movie projector (focal length: 400 mm)
Christie AW3 platter, BIG SKY Industries console, and Century SA projector
nonrewind in Royal – Malmö, Sweden
A diagram of the VistaVision format
A photo of a 35 mm film print featuring all four audio formats (or "quad track")- from left to right: SDDS (blue area to the left of the sprocket holes), Dolby Digital (grey area between the sprocket holes labelled with the Dolby "Double-D" logo in the middle), analog optical sound (the two white lines to the right of the sprocket holes), and the Datasat time code (the dashed line to the far right.)
Simulated wide screen image with 1.96 to 1 ratio as it would be seen in a camera viewfinder or on a theater screen
Simulated anamorphed image with 1.33 to 1 ratio (4:3) as it would appear on a frame of film

This motion is critical to the use of film in a movie camera or movie projector.

- Intermittent mechanism

The intermittent mechanism can be constructed in different ways.

- Movie projector
35 mm movie projector in operation

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A modern 4K digital cinema camera in 2018, Canon EOS C700 MultiDyne

Movie camera

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Type of photographic camera that rapidly takes a sequence of photographs, either on an image sensor or onto film stock, in order to produce a moving image to project onto a movie screen.

Type of photographic camera that rapidly takes a sequence of photographs, either on an image sensor or onto film stock, in order to produce a moving image to project onto a movie screen.

A modern 4K digital cinema camera in 2018, Canon EOS C700 MultiDyne
The chronophotographic gun invented by Étienne-Jules Marey.
Charles Kayser of the Edison lab seated behind the Kinetograph. Portability was not among the camera's virtues.
Film-gun at the Institut Lumière, France
The Aeroscope (1909) was the first hand-held movie camera.
ARRI ARRICAM Studio 35mm film camera
The Red EPIC camera has been used to shoot numerous feature filmsincluding The Amazing Spiderman and The Hobbit.
Basic operation: When the shutter inside the camera is opened, the film is illuminated. When the shutter is completely covering the film gate, the film strip is being moved one frame further by one or two claws which advance the film by engaging and pulling it through the perforations.
A spring-wound Bolex 16 mm camera
Multiple cameras to take surround images (1900 Cinéorama system, for modern version see Circle-Vision 360°
Various German Agfa Movex Standard 8 home movie cameras

In contrast to the still camera, which captures a single image at a time, by way of an intermittent mechanism, the movie camera takes a series of images; each image is a frame of film.

The strips of frames are projected through a movie projector at a specific frame rate (number of frames per second) to show a moving picture.