Embed Size (px)
DESCRIPTION
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: - PowerPoint PPT Presentation
Citation preview
Basic Camera FunctionBasic Camera Function
The camera converts an optical image into electrical signals that are reconverted by a television receiver into visible screen images.
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:
To do this, the camera needs:
LensCamera bodyViewfinder
LensCamera bodyViewfinder
The BasicsThe 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.
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 BasicsThe 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
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
LENSLENSSelects portion of scene at which you point the camera & produces a sharp optical image of it.
Selects portion of scene at which you point the camera & produces a sharp optical image of it.
CameraCameraCamera contains a beam splitter (imaging device) which converts optical image from lens into electrical signals.
Camera contains a beam splitter (imaging device) which converts optical image from lens into electrical signals.
ViewfinderViewfinderReconverts electrical signals into video pictures of the lens generated scene.
Reconverts electrical signals into video pictures of the lens generated scene.
Camera FunctionCamera Function
Light is reflected off object
Light is reflected off object
Camera FunctionCamera Function
Light is gathered & transmitted by lens to imaging device. (beam splitter)
Light is gathered & transmitted by lens to imaging device. (beam splitter)
Camera FunctionCamera Function
Beam splitter splits white light into red, green & blue light beams.
Beam splitter splits white light into red, green & blue light beams.
Camera FunctionCamera FunctionBeams are transformed by CCD’s (charge coupled devices) into electrical energy.
Beams are transformed by CCD’s (charge coupled devices) into electrical energy.
Camera FunctionCamera Function
Electrical energy is amplified, processed & reconverted into video pictures by the viewfinder.
Electrical energy is amplified, processed & reconverted into video pictures by the viewfinder.
