In 2016 Canon released a newer design the Canon EF 16-35mm f/2.8L III USM which offers a 9 bladed aperture and additional optical refinements (though at a higher price). With it's super versatile go anywhere range and bright solid optical perfomance the 16-35mm II remains a popular choice and a tremendous value. Key Features. Top-tier Canon EF
16–35mm f/2.8 Lens Construction 16 elements in 11 groups Diagonal Angle of View 108°10’–63°00’ Focus Adjustment AF with full-time manual Closest Focusing Distance 0.92 ft. / 0.28m Filter Size 3.2 in. / 82mm diameter Max. Diameter x Length, Weight Ø3.5 x 5.0 in., approx. 27.9 oz. / Ø88.5 x 127.5mm, approx. 790g Specifications EF 16