Canon 17-85/4.0-5.6 EF-S IS USM is a compact, lightweight 5x zoom equivalent to a 28-135 in 35mm format.
Excellent optical quality: Aspheric element with two Aspherical surfaces utilized.
Close-focusing to 1.15 feet.
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 lens 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 zooming.
Lens Construction 17 elements in 12 groups.
Inner focusing system, with focusing cam.
Closest focusing distance 0.35m - 1.15 ft.
Filter thread size 67mm.
Maximum diameter x length 3.1 x 3.6 inches.
Weighs 16.8 oz. / 475g.