A catadioptric lens system includes, in order of light travel: a first lens group that includes a concave mirror and a convex mirror and has a positive refractive power; a second lens group that is positioned on the image side of the concave mirror and has a negative refractive power; and a third lens group that has a positive refractive power, wherein a close-range object is brought into focus by moving the second lens group in a direction parallel with the optical axis, and wherein the following conditional expression is satisfied 0