A CCD driver circuit adjusts and supplies pulse-type signals to a CCD in
order to adjust the sensitivity of the CCD. A metering circuit meters a
signal output from the CCD. A sensitivity control circuit controls the
sensitivity of the CCD by controlling the sensitivity multiplication
factor of the CCD based on a metering result by the metering circuit. A
metering correcting circuit corrects a metering result from the metering
circuit based on a charge multiplication factor from the sensitivity
control circuit. An aperture control circuit controls an aperture based
on a metering signal corrected by the metering correcting circuit. Thus,
an image of an object of which strength of light largely varies can be
obtained as an image under a proper dimming state.