Bellows camera
On the back side of the camera, there is a ground-glass screen, used to focus and compose the image before exposure, and is replaced by holder with the sensitive film, a photographic plate or a digital image sensor, to take the shot. The front and rear frames can be moved in various ways relative to each other, unlike most other types of cameras. This allows to control the focus, depth of field and perspective . The camera is normally used with a tripod or a similar type of support.