A vision system for a vehicle includes a rear camera disposed at a rear portion of the vehicle and having an exterior field of view rearward of the vehicle. The rear camera includes an imaging array and a lens system for imaging external sources of light at the imaging array. The lens system includes at least one asymmetric anamorphic lens optic. The asymmetric anamorphic lens optic may include a longitudinally truncated conical-shaped lens optic. The longitudinal axis of the longitudinally truncated conical-shaped lens optic may be generally vertical when the rear camera is disposed at the rear portion of the vehicle, with a smaller diameter portion at an upper region of the optic and a larger diameter portion at a lower region of the optic.