| 摘要 |
A photographic image-capturing element that receives a subject light flux and outputs a photographic image signal and a white balance adjustment image-capturing element that receives the subject light flux and outputs a white balance adjustment image signal are provided. Based upon the white balance adjustment image signal, color data are extracted from at least partial area in the photographic image plane to calculate the distance between the color data and a full radiator locus, i.e., the offset quantity by which the color data are offset from light source reference color data. The color of the light source is estimated by evaluating the offset quantity thus calculated, an R gain and a B gain are calculated in correspondence to the estimated value and a white balance adjustment is performed on the photographic image signal using these gains.
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