The Canon EF-S 17-85 mm lens is a great general-purpose lens suitable for cameras such as the Canon 20D or Digital Rebel XT. One of the more notable features of this lens is that it makes use of Canon’s image stabilizer, allowing you to take crisp photos at slow shutter speeds. In fact, the reviewer claims that taking a 1/10 sec shot at 4 f/4 is free from the shaky blur. You don’t need to buy additional lenses for this purpose, which usually end up being bulkier and pricier. Although it’s an all-around lens, it can take great portraits especially when you’re a bit close to the subject. Despite its wide focal length range, it’s a light lens at less than 17 ounces and 3.6 inches. At its longest, the wider end stretches up to 4.7 inches.