BlattWorld, Item Details: Canon CANON EOS Zoom Super Wide Angle EF-S 17-85mm f/4-5.6 IS USM

Specifications

Lens
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

Features

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 lens's 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