b: a device that consists of a lightproof chamber with an aperture fitted with a lens and a shutter through which the image of an object is projected onto a surface for recording (as on film) or for translation into electrical impulses (as for television broadcast)
— off camera
: while not being filmed by a television or movie camera <he's a different person off camera>
: outside the scope of a television or movie camera <sounds of gunfire taking place off camera>
— on camera
: before a live television camera <go on camera>; also: while being filmed by a television or movie camera <looked relaxed on camera>
: within the scope of a television or movie camera <you can hear a dog but he never appears on camera>
Device for recording an image of an object on a light-sensitive surface (seephotography). It is essentially a light-tight box with an opening (aperture) to admit light focused onto a sensitized film or plate. All cameras have included five crucial components: (1) the camera box, which holds and protects the sensitive film from all light except that entering through the lens; (2) film, on which the image is recorded; (3) the light control, consisting of an aperture or diaphragm and a shutter, both often adjustable; (4) the lens, which focuses the light rays from the subject onto the film, creating the image; and (5) the viewing system, which may be separate from the lens system (usually above it) or may operate through it by means of a mirror. The camera was inspired by the camera obscuraa dark enclosure with an aperture (usually provided with a lens) through which light enters to form an image of outside objects on the opposite surfaceand was developed by Nicephore Niepce and L.-J.-M. Daguerre in the early 19th century. See alsodigital camera.