Canon 10-22mm USM Zoom f/3.5-4.5 - EF-S Mount

The Canon 10-22mm USM Zoom f/3.5-4.5 provides ultra wide-angle coverage to the EOS 20D, 30D, 40D, 50D and Digital Rebel SLRs. Equivalent to a 16-35mm zoom, it offers excellent performance and optics designed from the ground-up for digital SLR use. Three Aspherical lens elements, plus a Super-UD element, assure image quality. Its ring-type USM means fast and silent AF along with full-time manual focus. It focuses as close as 9.5".

Features:

• Excellent optical quality and true wide-angle coverage with select digital SLRs
• Superior AF performance and speed, with full-time manual focus by simply turning ring
• Close-focusing to 9.5 inches -- fill the frame with subjects as small as 3.6 x 5.4 inches
• Relatively compact size and light weight for an ultra-wide zoom lens
• Inner focusing system (no front element rotation); length doesn't change if zoomed
• Circular aperture design -- natural highlights, even stopped down two stops
• Electronic diaphragm -- manually-set apertures stay constant from f/4.5 thru f/22
• EF-S lens mount -- exclusively for EOS 20D, 30D, 40D, 50D and Digital Rebel bodies

Specifications:

• Focal Length: 10-22mm
• Maximum Aperture: f/3.5-4.5
• Lens Construction: 13 elements in 10 groups
• Diagonal Angle of View: 107° 30' - 63° 30'
• Focus Adjustment: Inner focusing system, with focusing cam
• Closest Focusing Distance: 9.5" (0.24m)
• Filter Size: 77mm
• Diameter x Length: 3.3" x 3.5" (83.5mm x 89.8mm)
• Weight: 0.85 lb (385g)