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 & Maximum Aperture: 20 - 35mm; 1:3.5 - 4.5
Lens Construction: 12 elements in 11 groups
Diagonal Angle of View: 94 degrees - 63 degrees
Focus Adjustment: Inner focusing system with USM
Closest Focusing Distance: 0.34m / 1.1 ft.
Zoom System: Rotating type
Filter Size: 77mm
Max. Diameter x Length, Weight: 3.3" x 2.7", 12 oz. / 83.5 x 68.9mm, 340g