Contained by the frame contribute to the meaning of a shot.
McCarthy was involved during this issues- 1940s to 1950s!
George Eastman introduced film roll in 1884.
In the visual arts, shape is a flat, enclosed area of an artwork created through lines, textures, colours or an area enclosed by other shapes for example triangles circles and squares. Likewise, a form can refer to a three-dimensional composition or object within a three-dimensional composition.