Friday, September 3, 2010

Vocabulary & Inside Of A Camera

  • Macro Focusing-Applied To Zoom Lenses,Moves The Lens Group(s),Enabling The Lens To Focus Closer Then The Normal Focusing Distance From Close-Up Shooting.
  • Burst Mode - Digital and traditional film cameras with a burst mode (or Continuous Frame Capture) allow you to take a series - or burst - of images just by holding the shutter button down. Used often for high-speed and action shots.
  • Aberration-An optical defect in a lens causing it to form an image that is not sharp or that is distorted. This can take the shape of edge distortion or a lack of sharpness.
  • Angle of View-The area of a scene that a lens can cover. The focal length of the lens determines the angle of view. A wide-angle (short-focal-length) lens includes more of a scene than a standard (normal-focal-length) lens or telephoto (long-focal-length) lens. Angle of view is basically the angle at which light rays can pass through the lens to produce an image on the film.
  • Aperture-The aperture is the opening formed by the blades of the iris or diaphragm in the lens, through which light passes to expose the film. Aperture size is usually given in f-numbers, the larger the number, the smaller the opening. Aperture size together with shutter speed determine the amount of light falling on the film (exposure). The aperture is sometimes called the “stop".
  • Shutter-a mechanical device for opening and closing the aperture of a camera lens to expose film or the like.
  • Exposure-Light striking a sensitized material (film or paper emulsion). 
  • Depth of Field-The range of acceptably sharp focus in front of and behind the distance the lens is focused on. 
  • F-Stop-the setting of an adjustable lens aperture, as indicated by an f number.
  • Focal Length-The distance from the optical center of a lens to the image plane when the lens is focused to infinity

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