Filter - Optics and Photography

Optics and Photography

In optics and photography, a device to remove, or to enhance, certain ranges of wavelengths (colors) of light. See:

  • Filter (optics), including types:
    • Interference filter
    • Dichroic filter
  • Photographic filter, a camera accessory consisting of an optical filter that can be inserted in the optical path
  • Infrared cut-off filter, designed to reflect or block mid-infrared wavelengths while passing visible light
  • H-alpha filter, a specific red visible spectral line created by hydrogen with a wavelength of 6562.8 Å
  • Chelsea filter
  • Astronomical filter, a telescope accessory used to enhance the details of celestial objects.

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Famous quotes containing the word photography:

    “If photography is allowed to stand in for art in some of its functions it will soon supplant or corrupt it completely thanks to the natural support it will find in the stupidity of the multitude. It must return to its real task, which is to be the servant of the sciences and the arts, but the very humble servant, like printing and shorthand which have neither created nor supplanted literature.”
    —Charles Baudelaire (1821–1867)