| 摘要 |
PROBLEM TO BE SOLVED: To provide a single CCD camera that can reduce a shot noise mixed in an output signal of each color. SOLUTION: Exposure is adjusted for each color of a color filter so that each luminous quality passing through color filters in each color and made incident onto a CCD is arranged (S1, S4, S7), signals corresponding to the respective colors are extracted from image signals obtained through photographing (S2, S5, S8) at respective exposures (S10a, 10b, S10c) and the image signal with less noise is obtained (S11).
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