BlattWorld, Item Details: Canon EF-S 17-85mm f4-5.6 IS USM

Compact, lightweight design with a 5x zoom ratio -- 28 to 135mm equivalent
Excellent optical quality: Aspheric element with two Aspherical surfaces utilized
Close-focusing to 1.15 feet -- at 135mm, fills the frame with subject 3 x 4.4 inches
Ring-type Ultrasonic motor for superior AF performance; allows full-time MF
Image Stabilization extends the lenss usefulness in low-light levels
Circular aperture design -- natural highlights, even stopped down two stops
Non-rotating front element; lens length does not change during focusing
EF-S lens mount -- exclusively for EOS 20D and Digital Rebel bodies
Focal Length & Maximum Aperture
17 - 85mm; 1:4-5.6
Lens Construction
17 elements in 12 groups
Diagonal Angle of View
78° 30 - 18° 25
Focus Adjustment
Inner focusing system, with focusing cam
Closest Focusing Distance
0.35m - 1.15 ft.
Zoom System
Ring USM
Filter Size
67mm
Max. Diameter x Length, Weight
3.1 x 3.6, 16.8 oz. / 78.5 x 92mm, 475g