| 摘要 |
PROBLEM TO BE SOLVED: To provide an image pickup device that attains accurate exposure control independently of deterioration in the sensitivity depending on the aperture and accuracy error of the aperture and suppresses deterioration in the S/N of a photographed image so as to effectively correct the deterioration in the sensitivity depending on the aperture or the like. SOLUTION: An EEPROM 25 stores in advance a sensitivity deteriorated value denoting a difference between an actual light receiving amount and a light receiving amount substantially to be received, which is caused by the deterioration in the sensitivity depending on the aperture and the accuracy error of the aperture by each aperture in use. Then the sensitivity deterioration value is read from the EEPROM 25 depending on the aperture in use at photographing and the read deterioration in the sensitivity depending on the aperture is corrected in combination with the correction by a shutter speed and the correction by a digital gain with respect to an image signal. |
