Canon Zoom lens EF-S 17-85mm with Image Stabilizer

The Mad Dog Voyager crew has chosen the Canon EOS 20D camera with a Canon EF-S 17-85mm zoom lens (with Image Stabilizer) because of the quality and versatility of this combination to make photos above and underwater

Details on the Canon EF-S 17-85mm f4-5.6 IS USM zoom lens with Image Stabilizer

Overview (As per Canon)

Equivalent to a 28-135mm lens, this new EF-S lens brings true wide-angle and tele coverage to EOS 20D and Digital Rebel shooters. It has Canon's Image Stabilization system, allowing safe hand-holding at speeds up to three stops slower than otherwise possible. And of course, it's optically optimized for digital SLRs. A ring-type USM means both fast and silent AF, as well as full-time manual focus when in the AF mode.

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 zooming
- EF-S lens mount -- exclusively for EOS 20D and Digital Rebel bodies

Specifications
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, - 3.1" x 3.6". / 78.5 x 92mm
Weight - 16.8 oz / 475g

Diving with the Canon 20D digital SLR camera
The Mad Dogs use the Canon 20D digital SLR camera with a Canon Zoom lens (EF 75-300mm with Image Stabilizer) in a Ikelight underwater camera housing for our diving trips