In the imaging apparatus of the invention, a camera assembly 200 including a camera 202 is mounted on and supported by a base 110 in a pivotally rotatable manner both in a vertical direction and in a horizontal direction to allow tilting motions and panning motions of the camera 202. The camera assembly 200 is supported on an assembly fixation structure 114 of the base 110 to allow the tilting motions of the camera assembly 200. The assembly fixation structure 114 is panned relative to a base foot 112 of the base 110. A panning rotation gear 175 for the panning motions of the camera 202 is fixed on a ground plate 121, which has a positional change relative to a pedestal plate unit 130 in the assembly fixation structure 114. A tilting motor 160, a panning motor 162, and relevant vertical and horizontal rotation transmission mechanisms required for the tilting motions and the panning motions of the camera 202 are collectively arranged on the pedestal plate unit 130 of the assembly fixation structure 114. The tilting motor 160 and the panning motor 162 are arranged in an attitude having respective output shafts in the horizontal direction and are disposed to face each other across a pivot shaft fitting element 135 on the pedestal plate unit 130. This arrangement of the invention enables further downsizing of the whole imaging apparatus applied to, for example, a security camera.