This Canon EF 16-35mm f2.8L III lens isaprofessionalfull-frame ultrawide lens with Canon’s premiumL glass and construction, plus a fast f2.8 constant aperture.Clean glass, excellent function. Worth noting: there is a very small ding in the edge of the zoom ring (pictured) which has no functional effect, but is definitely worthy of note. Otherwise, cosmetic condition is excellent. Includes hood.