| 摘要 |
A digital camera ( 10 ) includes a CCD imager ( 16 ). An image signal corresponding to an optical image is output from the CCD imager ( 16 ), and an incident light amount to the CCD imager ( 16 ) is restricted by an aperture unit ( 14 ). A CPU ( 40 ) adjusts an exposure time period of the CCD imager ( 16 ) on the basis of an average luminance value of a normal evaluation area assigned to the center of a screen out of the image signals output form the CCD imager ( 16 ). The CPU ( 40 ) also adjusts an aperture amount of the aperture unit ( 14 ) on the basis of an average luminance value of a specific evaluation area assigned to the end of the screen out of the image signals output form the CCD imager ( 16 ).
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