Photometry device
AssigneePENTAX Corporation
InventorsIsamu Hirai, Yoshikazu Iida
Life of this patent
Estimating the term…
Abstract
A photometry device for a camera has a normal light metering system and a plurality of light metering systems having different spectral sensitivity characteristics. An exposure amount of an object is determined in accordance with an output of the normal light metering system. A colormetry system divides a photometry area into a plurality of areas and judges a color of the object at each of the plurality of areas. The compensation amount determining system determines the exposure compensation amounts respectively corresponding to the plurality of areas based on the color thereat. A compensation amount related to an area corresponding to a focused portion of the object. The exposure amount is compensated in accordance with the determined exposure compensation amount.
Claims13
A photometry device for a camera, comprising:
- a normal light metering system having spectral sensitivity characteristics close to visual sensitivity characteristics;
- a plurality of light metering systems having spectral sensitivity characteristics that are different from those of said normal light metering system;
- an exposure amount determining system that determines an exposure amount of an object in accordance with an output of said normal light metering system;
- a colorimetry system that judges a color of the object in accordance with the outputs of said plurality of light metering systems;
- a compensation amount determining system that determines an exposure compensation amount in accordance with the color judged by said colorimetry system;
- said colorimetry system dividing a photometry area into a plurality of areas and performing colorimetry for each of said plurality of areas,
- said compensation amount determining system determining a plurality of exposure compensation amounts respectively corresponding to said plurality of areas, one of the plurality of exposure compensation amounts being selected in accordance with at least one of said plurality of areas corresponding to a focused portion of the object, and
- a controller that compensates for the exposure amount determined by said exposure amount determining system in accordance with the determined exposure compensation amount.
A photometry device for a camera, comprising:
- a plurality of light metering systems having predetermined spectral sensitivity characteristics;
- an exposure amount determining system that determines an exposure amount of an object;
- a colorimetry system that determines a color of the object in accordance with outputs of said plurality of light metering systems;
- a compensation amount determining system that determines an exposure compensation amount is accordance with the color judged by said colorimetry system;
- said colorimetry system dividing a photometry area into a plurality of areas and performing colorimetry to judge a color of the object for each of said plurality of areas,
- said compensation amount determining system determining the exposure compensation amounts corresponding to said plurality of areas, one of the plurality of exposure compensation amounts being selected in accordance with at least one of said plurality of areas corresponding to a focus position of the object, and
- a controller that compensates for the exposure amount determined by said exposure amount determining system in accordance with the determined exposure compensation amount.
Dependencies are inferred from the claim text.