Abstract: The present invention is to provide a camera head capable of efficiently radiating heat generated by heat sources in the camera head even if it is equipped with a dust-proofing and drip-proofing structure. A heat radiating member having a higher heat conductivity than the heat conductivity of the lens barrel is disposed farther backward in the direction of the optical axis than the lens barrel. Heat generated in a CPU is transferred to the heat radiating member through a mount section, and heat generated in a CCD is transferred to the heat radiating member through the lens barrel. Since the outer circumference of the heat radiating member is always in contact with the external atmosphere, it is maintained at the temperature level of the external atmosphere, and the heat generated in the CPU and the CCD is efficiently radiated into the outer space.

Abstract: An image-taking apparatus includes: an A/D conversion circuit having an amplifier that is capable of amplifying image signals per shooting frame; and a gain changer that changes the gain of the amplifier. The apparatus causes the gain changer to increase the gain of the amplifier up to a level that compensates for a gradual decrease in the amount of light emitted from LEDs that occurs during continuous shooting. As a result, the amplitude level of every image signal is made constant and thus, replayed images of the same brightness shot during the continuous shooting are obtained.

Abstract: A camera comprises a lens unit and a camera body to which the lens unit is attached by a rotational operation. The camera body is provided with terminals including a specific terminal. Arrangement of the specific terminal is different from that of the other terminals. In detaching the lens unit from the camera body, the specific terminal is adapted to be disconnected earlier relative to the other terminals while the other terminals are connected. After the disconnection of the specific terminal has been detected, the other terminals are set to high impedance.