Canon EF-S 10-22/3.5-4.5 USM

Compact and lightweight ultra-wide zoom lens specifically for digital SLR's that accept EF-S lenses. Uses optics designed to take full advantage of the small image circle and short back focus in EF-S lenses. 10-22mm ultra-wide-angle zoom range (equivalent to 16-35mm in 135mm format). Inner focusing, ring USM and new AF algorithms for fast and quiet autofocusing. Features three aspherical lens elements (two types) as well as a super-UD glass element for high image quality at all focal lengths. Optimized lens coating minimising flare and ghosting prone occurring with digital cameras. Minimum focusing distance of 0.24m at all focal lengths. Circular aperture for beautiful out-of-focus images

Only environmentally friendly lead free glass used in optics.

• Focal Length & Max. Aperture: 10-22mm 1:3.5-4.5
• Filter Diameter: 77mm; P=0.75mm/1 filter
• Magnification with Extension Tube EF12 II: 0.77x - 0.58x (only at tele end)
• Magnification with Extension Tube EF25 II: 1.51x - 1.28x (only at tele end)
• Diagonal Angle of View: 107° 30' - 63° 30' (27.3mm)
• Horizontal Angle of View: 97° 10' - 54° 30' (22.7mm)
• Lens construction: 13 elements in 10 groups
• Minimum aperture: f/22-27 (f/22-29 for cameras featuring 1/3-stop increments also)
• No. of aperture blades: 6 (circular aperture)
• Closest focusing distance (m): 0.24m
• Focus drive: Ring USM
• Dimensions: 83.5mm dia. x 89.8mm
• Weight: 385g