An image pickup apparatus may include an imaging optical system operative to adjust a focal position of images corresponding to light incident from a lens, a frame arranged movably in an optical axial direction of light incident to the imaging optical system for fixing the imaging optical system by covering the periphery of the imaging optical system, a drive unit operative to move the frame in the optical axial direction to an arbitrary position within a predetermined range, an image pickup device operative to receive light incident through the imaging optical system so as to output a signal corresponding to the received light, and an urging unit inserted between a pedestal base having the image pickup device attached thereto and the frame for urging the frame in the optical axial direction as well as in a direction remote from the image pickup device.