In a color filter array of a color imaging element 26, a G filter 34G to which other G filters 34G are adjacent in horizontal and vertical directions and a G filter 34G to which another G filter 34G is not adjacent are determined as dense and sparse G filters, respectively. Defective information on a sparse G defective pixel corresponding to the sparse G filter is more preferentially registered than defective information on a dense G defective pixel corresponding to the dense G filter. Thereby, interpolation processing for a pixel value of the sparse G defective pixel is more preferentially performed than interpolation processing for a pixel value of the dense G defective pixel.