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Film plane

Film plane

Overview
A film plane is the area inside any camera
Camera
thumb |right|Cameras from Large to Small, Film to Digital A camera is a device that records images, either as a still photograph or as moving images known as videos or movies...

 where the individual frame of film
Photographic film
Photographic film is a sheet of plastic coated with an emulsion containing light-sensitive silver halide salts with variable crystal sizes that determine the sensitivity, contrast and resolution of the film...

 or digital sensor is positioned during exposure
Exposure (photography)
In photography, exposure is the total amount of light allowed to fall on the photographic medium during the process of taking a photograph...

, and the focussed image is received upon the light-sensitive material. It is sometimes marked on camera body with the 'Φ' symbol where the vertical bar represents the exact location.
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Encyclopedia
A film plane is the area inside any camera
Camera
thumb |right|Cameras from Large to Small, Film to Digital A camera is a device that records images, either as a still photograph or as moving images known as videos or movies...

 where the individual frame of film
Photographic film
Photographic film is a sheet of plastic coated with an emulsion containing light-sensitive silver halide salts with variable crystal sizes that determine the sensitivity, contrast and resolution of the film...

 or digital sensor is positioned during exposure
Exposure (photography)
In photography, exposure is the total amount of light allowed to fall on the photographic medium during the process of taking a photograph...

, and the focussed image is received upon the light-sensitive material. It is sometimes marked on camera body with the 'Φ' symbol where the vertical bar represents the exact location.

Movie camera
Movie camera
The movie camera is a type of photographic camera which takes a rapid sequence of photographs on strips of film. In contrast to a still camera, which captures a single snapshot at a time, the movie camera takes a series of images, each called a "frame". This is accomplished through an intermittent...

s often also have small focus hooks where the focus puller
Focus puller
In cinematography, a focus puller or first assistant camera is a member of a film crew's camera department who is responsible for keeping the camera properly focused during a shoot....

 can attach one side of a tape measure
Tape measure
A tape measure or measuring tape is a flexible form of ruler. It consists of a ribbon of cloth, plastic, fiber glass, or metal strip with linear-measurement markings. It is a common measuring tool. Its flexibility allows for a measure of great length to be easily carried in pocket or toolkit and...

to quickly gauge the distance to objects that he intends to bring into focus.