Lens fully working, excellent sharpness throughout whole focal length. SUPER SHARP corner to corner on my Canon 5dsr.
Single owner (professional) bought new in Singapore in 2015 from reputable dealer (TKFoto) receipt provided.
Lens is clean of dust / fungus and stored in dry cabinet. Never dropped or abused. Some minor marking on exterior plastic from normal use. The rubber on the zoom ring has become slightly raised.