Basic Camera Function • The camera converts an optical image into electrical signals that are reconverted by a television receiver into visible screen images.
To do this, the camera needs: • Lens • Camera body • Viewfinder
The Basics • A typical analog camcorder contains two basic parts: • A camera section, consisting of a CCD, lens and motors to handle the zoom, focus and aperture • A VCR section, in which a typical TV VCR is shrunk down to fit in a much smaller space.
The Basics • The camera component's function is to receive visual information and interpret it as an electronic video signal. • The VCR component is exactly like the VCR connected to your television: It receives an electronic video signal and records it on video tape as magnetic patterns
LENS • Selects portion of scene at which you point the camera & produces a sharp optical image of it.
Camera • Camera contains a beam splitter (imaging device) which converts optical image from lens into electrical signals.
Viewfinder • Reconverts electrical signals into video pictures of the lens generated scene.
Camera Function • Light is reflected off object
Camera Function • Light is gathered & transmitted by lens to imaging device. (beam splitter)
Camera Function • Beam splitter splits white light into red, green & blue light beams.
Camera Function • Beams are transformed by CCD’s (charge coupled devices) into electrical energy.
Camera Function • Electrical energy is amplified, processed & reconverted into video pictures by the viewfinder.