Focal Point: In a camera lens, that spot where the light rays, bent by the lens, converge before expanding again and striking the film or electronic pickup at the focal plane.

 

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Focal Point: In a camera lens, that spot where the light rays, bent by the lens, converge before expanding again and striking the film or electronic pickup at the focal plane.

Hyperfocal Point: Nearest point to the camera which is considered acceptably sharp when the lens is focused on infinity. When a lens is focused on the hyperfocal point, depth of field extends from a distance . . . View Full Definition

Hyperfocal Distance: Distance between the camera and the hyperfocal point.

Focal Plane: The plane within a film camera where the light strikes the film.

Focal Length: The distance from the lens' optical center to its focal point, usually measured in millimeters. There are three conventional types of focal length: wide angle, normal, and telephoto.

Point-Source Pollution: Water contamination that can be traced to a single point. A toxic material spill and a sewage discharge pipe are examples of point sources.

Point-Of-View Shot: A shot in which the camera is physically situated very close to a character's position: thus the resulting shot approximates the character's point-of-view.

Point Source Epidemic: A point source epidemic occurs when a group of people is exposed to a single common source of infection at a single place and time. There is no significant transmission between individuals. . . . View Full Definition

Point Source: A stationary location or fixed facility such as an industry or municipality that discharges pollutants into the air or surface water through pipes, ditches, lagoons, wells, or stacks - a sin . . . View Full Definition

Point Of View Character: The central figure in a limited point of view narration, the character through whom the reader experiences the author's representation of the world. See point of view, above.