CANON 20-35mm f3.5-4.5 USM
A highly portable lens with high optical performance and a light weight of 12 oz. (340g). A very practical ultra-wide-angle zoom. The large front lens group minimizes peripheral darkening, and the flare-blocking diaphragm minimizes flare. Also, with lens group 2 being the zoom group, distortion is corrected.
Focal length and maximum aperture: 20-35 mm 1:3.5-4.5
Lens construction: 12 elements in 11 groups
Diagonal angle of view: 94°-63°
Focus adjustment: Inner focusing system with USM
Closest focusing distance: 0.34m / 1.1ft
Filter size: 77mm