Canon EF 17-40mm f/4.0L USM, Ultra-wide lens, 12/9, 17 - 40 mm, Canon EF
Canon EF 17-40mm f/4.0L USM. Component for: SLR, Lens structure (elements/groups): 12/9, Lens type: Ultra-wide lens. AF actuator: USM, Maximum magnification: 0.24x. Product color: Black. Diameter: 3.29" (8.35 cm), Filter size: 3.03" (77 mm), Length: 3.81" (96.8 mm)