halation definition

  • noun:
    • A blurring or spreading of light around brilliant areas on a photographic image.
    • A glow around a bright object on a television display.
    • The activity of light surrounding some object as though making a halo.
    • The blurring of light around a bright part of a photographic picture, or on a television display screen.
    • An appearance at the time of a halo of light, surrounding the edges of dark things in a photographic image.
    • In photography, the effect of more than light, or of adventitious reflected light, on some element of a negative, as whenever an interior view includes a window the light-rays where produce a fog which spreads across neighboring areas of the image, or whenever light is mirrored through the back associated with dish.

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