Black Lens structure (elements/groups): 11/9 Maximum aperture number: 22 Closest focusing distance: 0.3 m Auto focus Manual focus EF35mm 1.4L USM.Features-Focal length and maximum aperture: 35 mm 1:1.4.-Lens construction: 11 elements in 9 groups.-Diagonal angle of view: 63°.-Focus adjustment: Rear focusing system with USM.-Closest focusing distance: 0.3m / 1ft.-Filter size: 72mm.L-series professional f/1.4 wide-angle lens with an aspherical lens element to correct aberrationsThis L-series is a professional f/1.4 wide-angle lens with an aspherical lens element to correct aberrations. With an innovative floating system which enables a high picture quality to be obtained over the entire focusing range you can be confident that you get the best pictures time after time.Autofocusing is also quick and quiet with rear focusing and ring USM. To get even more out of this lens a full-time manual focus is also available, picture quality and Canon innovation go hand in hand.* The above SRP is Cano