Method and apparatus for exposure control based on color balance information
Auto-exposure device of a camera
Camera having electronic flash units
Camera system with color temperature meter
Photometry device of camera
Optical information recording medium capable of recording information on both track guide grooves and lands and optical information reproducing apparatus for optical information recording medium
Camera provided with photometry device Patent #: 6175693
ApplicationNo. 897927 filed on 07/05/2001
US Classes:396/225, Color temperature compensation or detection396/234More than two photometering areas
ExaminersPrimary: Perkey, W. B.
Attorney, Agent or Firm
Foreign Patent References
International ClassG03B 007/28
Foreign Application Priority Data2000-07-06 JP
AbstractA photometry device has a normal light photometry sensor and a external light sensor. The normal light photometry sensor performs photometry with respect to an object. The external light sensor performs photometry with respect color components of the external light. An exposure amount of an object is determined based on an output of a normal light sensor. If a difference between the exposure values is greater than the predetermined value, a color judged in the colorimetry procedure is forcibly set to "colorless" and no substantial colorimetric compensation is performed. If the Bv difference is not greater than the predetermined value, the light source compensation data preliminary stored is used for the colorimetric compensation.