초록 ▼

An exposure control is disclosed for controlling the amount of light admitted to a light-responsive medium in photographic apparatus such as a camera. The control is adapted to generate a plurality of shutter-aperture options in response to measurements of subject distance and ambient light. The exp

An exposure control is disclosed for controlling the amount of light admitted to a light-responsive medium in photographic apparatus such as a camera. The control is adapted to generate a plurality of shutter-aperture options in response to measurements of subject distance and ambient light. The exposure control contains a means for selecting one of the options to produce a suitable exposure. In order to maximize the overall picture quality, the exposure control comprises means for selecting the shutter-aperture option with the optimum depth of field to blur diameter ratio.

대표청구항 ▼

An exposure control comprising: means for measuring the level of ambient light; means for generating a plurality of aperture-shutter options for said measured level of light; means for measuring the distance to a subject; means for determining a parasitic system blur for each of said options at said

An exposure control comprising: means for measuring the level of ambient light; means for generating a plurality of aperture-shutter options for said measured level of light; means for measuring the distance to a subject; means for determining a parasitic system blur for each of said options at said measured distance; means for determining a depth of field for each of said options; means for selecting the option with the optimum depth of field to blur ratio; and means for controlling an exposure in accordance with the option having said optimum ratio.