Canon EF-S 17-85mm f/4-5.6 IS USM Lens

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An Angle of View Equivalent to a 27-136mm Lens on a 35mm Camera

Canon EF-S 17-85mm f/4-5.6 IS USM Lens While the lens does not take you to land that the L Series glass would take you, the wider range, and better clarity makes this lens, the perfect 'leave it on the camera lens'. If you are only going to buy one lens for your 20 or 30D then buy this lens. There is not a better general purpose lens out there.

EF-S 17-85 F4 IS USM EF-S lens brings true wide-angle to telephoto coverage to EOS 20D camera and Digital Rebel Camera Photographers. The 17-85mm IS lens is MUCH heavier than the standard 18-55mm lens and the construction certainly feels worth $500 or so versus $100 of the 18-55mm kit lens. It features Canon's Image Stabilization system, allowing safe hand-held photography at shutter speeds up to three steps slower than otherwise possible. And of course, it's optically optimized for digital SLRs. A ring-type USM delivers fast and silent auto focus, as well as full-time manual focus when in the AF mode.

Lenses that feature images stabilization offer distinct advantages when handholding,  but you need to remember that when using these lenses on tripods the IS system should to be turned off or else the lens can move during the exposure and cause camera shake while shooting on a tripod. This is a consequence that has mystified many photographers!

The EF-S 17-85mm f/4-5.6 IS USM lens provides a 5x zoom ratio and an angle of view equivalent to a 27-136mm lens on a 35mm camera. The new lens also uses a glass-molded aspherical lens element with aspherical surfaces on both sides for superb image quality throughout the entire zoom range and it features a closest focusing distance of 12 inches at all focal lengths. The EF-S 17-85mm IS lens is 5% shorter and 12% lighter than the EF 28-135mm IS lens and accepts 67mm filters. Possibly the best single lens to own with your Canon Digital Rebel SLR Camera. ✓


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

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

Compact, lightweight design with a 5x zoom ratio, 28 to 135mm equivalent

EF-S Lenses
By reducing the distance from the rear of the lens to the focal plane and reducing the size of the image circle to match the size of the APS-C imaging sensor used in digital SLRs such as the EOS 20D camera and Digital Rebel camera,Canon's EF-S lenses reduce the size, weight and cost of wide-angle lenses for these cameras while at the same time producing high image quality with superb resolution and contrast at all focal lengths.

Lens Includes

Front & Rear Lens Caps, 1-Year Warranty

Lens styleZoom lens  
Max Format Size APS-C / DX  
Lens focal length17 85 mm  
Stabilization type Yes (3 stops)  
Camera mount Canon EF-S  
Angle of view 78 30' - 18 25'  
Aperture (lens diaphragm)
Largest aperture opening F4.0 - F5.6  
Smallest aperture opening F22.0 - F32.0  
Includes aperture ring No  
Total diaphragm blades 6  
Aperture annotations Circular aperture  
Total Elements 17  
Number of Groups 12  
Coatings / special elements Super Spectra coatings  
Minimum focus distance 0.35 m (13.78")  
Maximum magnification ratio 0.2 x  
Autofocus type Yes  
Lens motor Ring-type ultrasonic  
Full time manual focus Yes  
Focusing method Internal  
Lens distance scale Yes  
Depth of field scale Yes  
Physical features
Overall weight475 g (1.05 lb)  
Lens diameter 79 mm (3.09")  
Overall length 92 mm (3.62")  
Construction materials Plastic barrel, metal mount  
Sealing No  
Lens color Black  
Zooming method Rotary (internal)  
Power zoom No  
Zoom lock switch No  
Filter thread size 67 mm  
Lens hood included No  
Lens hood code EW-73B  
Tripod collar included No  
Optional accessories Soft Case LP1116



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