A waterproof effect enhancing structure that can make an imaging apparatus compact. A camera unit including an imaging element, a rotation shaft that is a center of rotation of the camera unit, a bearing that rotatably supports the rotation shaft, a base member that supports the bearing, a presser member that is fixed to the rotation shaft, an ultrasonic motor that is disposed on a same axis as the rotation shaft, and has a rotor that is brought into pressure contact with the presser member, and a stator that is brought into pressure contact with the base member, and a waterproof unit disposed between the base member and the camera unit are placed in the imaging apparatus, and the camera unit, the waterproof unit, the base member, the ultrasonic motor, and the presser member are disposed in a rotation axis direction in this order.