A distance detection apparatus including: a light output unit which outputs a light; a computation unit which computes a distance to a detection target by using a time until when the light output from the light output unit is received in a light receiving unit; a deblurring optical system which is driven based on a detection result of a blurring and through which the output light is transmitted; a detection unit which detects a position of the deblurring optical system; a storage unit which stores a predetermined range; a determination unit which determines whether the position detected by the detection unit is included in the predetermined range; and a control unit which controls a light output by the light output unit in accordance with a determination result of the determination unit.