Picture plane
From Wikipedia, the free encyclopedia
A picture plane is the imaginary flat surface which is usually located between the station point and the object being viewed and is ordinarily a vertical plane perpendicular to the horizontal projection of the line of sight to the object's order of interest.
In photography the physical surface of a print can be thought of as the manifestation of its picture plane. The position of the camera at the time of image capture is the station point, and the edges of the camera's field of view create the imaginary borders of the picture plane, finally translating to the physical edges of a photographic print.