Used for focusing on a subject or composing a picture; the focusing screen is located at a position equivalent to that of the film plane. To provide dispersion, a matte field made of specially ground glass or plastic is generally used for focusing screens.
Glass or plastic screen set at the camera's image-forming plane, where the image can be viewed and focused. (see Finder)
Refers to Ground Glass. Usually on large format cameras, a piece of frosted glass at the focal plane where the lens projects an image that can be used for focusing and composition.
Sheet of ground glass, mounted on top of the body in reflex cameras, on which the lens projects an image closely similar to the image formed on the film. Can serve as a check on sharpness and field of view.
ground glass screen fixed to the camera at the image-forming plane, enabling the image to be viewed and focused.
A focusing screen is a flat translucent material, usually ground glass, found in a system camera that allows the user of the camera to preview the framed image in a viewfinder. Often, a focusing screen has etched markings that differ from model to model. Nikon makes focusing screens of different types that are categorized using letters of the alphabet and denote etchings of different designs.