Patent ID: 8300142

Claim:
An imaging apparatus comprising: a power supply; a first voltage converter which produces a first voltage and a second voltage which are different from each other, based on an output of the power supply, and outputs them to a first output system and a second output system, respectively; a second voltage converter which produces the first voltage based on the second voltage produced by the first voltage converter and outputted to the second output system, and outputs the first voltage to a third output system; an imaging element which is operated by the first voltage as a power supply voltage, and photoelectrically-converts an optical image of a photographic subject and obtains image data; at least one circuit element which is operated by at least one of the first voltage and the second voltage as a power supply voltage; a sensitivity setting section which sets an input sensitivity of the imaging element based on at least one of a user's operation and information of the photographic subject; and a power supply switching section which switches to supply the first voltage of the first output system to the imaging element in the case where the input sensitivity set by the sensitivity setting section is lower than a predetermined sensitivity, and switches to supply the first voltage which is from the third output system to the imaging element in the case where the input sensitivity set by the sensitivity setting section is higher than the predetermined sensitivity, wherein in the case where the input sensitivity set by the sensitivity setting section is low, the imaging element is driven by the first voltage from the first output system, and in the case where the input sensitivity set by the sensitivity setting section is high, the imaging element is driven by the first voltage from the third output system.