A camera apparatus is provided. A bracket is fixed to a windshield of a vehicle. A camera case is fixed to the bracket. A camera module is fixed to the camera case and includes a lens. The camera apparatus detects a position of an object present ahead of the vehicle. The object includes a lane and another vehicle. Information on the object acquired by the camera apparatus is used for at least one of lane departure alarm control, light control, and collision avoidance control. The camera apparatus further includes an adjustment structure for completing adjustment of an inclination angle in a vertical direction of an optical axis of the lens with respect to the windshield by the time when the camera case is completely fixed to the bracket.