Patent ID: 8045035

Claim:
An imaging apparatus, comprising: a color imaging device which converts an image of a subject projected through an optical system to color image signals and outputs the color image signals; an image processing unit which processes an image and saves the image; an image signal transferring unit which transfers the color image signals to the image processing unit; a timing signals generator which generates driving signals for driving the color imaging device; and a clock frequency adjuster, wherein, when the color imaging device is exposed during a long time exposure period not less than a predetermined time period, the clock frequency adjuster adjusts a clock frequency of the driving signals during the long time exposure period to be lower than a clock frequency of the driving signals during an exposure period less than the predetermined time period, the apparatus further comprising an exposure mode selecting unit, which switches an exposure time period during which the image of the subject is projected to the color imaging device, between a specified time period and a time period corresponding to a specified brightness, wherein when the exposure mode selecting unit switches to select the specified time period or the time period corresponding to the specified brightness, the clock frequency adjuster adjusts the clock frequency after not less than the predetermined time period elapsed.