still cameras 
Cameras whose principal components are a lightproof chamber and an optical system, which causes an image to be imprinted on a light-sensitive surface.
single-lens reflex (SLR) camera
Camera whose interchangeable lens is used to both view and shoot through a slanted mirror that flips up (reflex).
Camera with a viewfinder that is independent of the lens; it focuses using a system that measures distances (range).
Camera composed of a watertight pressure-resistant body; it is used mainly for underwater photography.
Camera that develops photos instantly. After a photo is taken, the exposed film is ejected from the camera and develops automatically in a few minutes.
Camera that contains a sensor and a microprocessor rather than film; it records and stores images in digital form, which can then be viewed on a screen.