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Photographic lighting system using incident light meter

  • US 5,384,616 A
  • Filed: 04/14/1993
  • Issued: 01/24/1995
  • Est. Priority Date: 04/14/1993
  • Status: Expired due to Fees
First Claim
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1. A photographic lighting apparatus for use with a camera, comprising:

  • sensing means for generating an incident light signal representative of an incident light intensity on a subject to be photographed;

    electric light means for directing fill light toward said subject;

    means for generating a distance input representative of a distance between said electric light means and said subject;

    means for generating a sensitivity input representative of a sensitivity of said camera to light;

    means for attenuating light output from said electric light means while preserving a color temperature of said light output;

    control means for controlling the fill light provided by said electric light means and activating said means for attenuating light output from said electric light meansin response to said incident light signal so that said fill light is controlled in accordance with a predetermined function such that said fill light is increased in intensity as the level of incident light intensity increases andin response to said distance input so that said fill light intensity at the subject is substantially independent of the distance between said light means and said subject andin response to said sensitivity input so that said fill light provided by said electric light means is compensated for the sensitivity of said camera to light.

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