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The Canon EF S 17 55mm f2 8 IS USM Lens is a superb, high quality lens that's primarily made for the EF-S zoom lens range, although the image quality is so good that some have likened it to being on par with that of the famous and highly regarded Canon L series range.

The main reason behind this is a large round aperture that produces a shallow depth of field and extremely high quality low dispersion aspherical lens elements that make sure you have outstanding image quality throughout the entire zoom range.

This lens also has another important and equally as extraordinary feature - image stabilization. This implies that the camera can accommodate for camera shake under certain circumstances, allowing you to shoot in low light more often and with more confidence that your images will still be of the best quality.

Additionally, the EF S 17 55 f 2.8 IS USM features a simple to use, ring-type ultra-sonic motor and a very fast and intuitive auto focus system, which is a real pleasure to use.

Product specifications and crucial data:

Focal length: 17-55 mm

Highest aperture: f/2.8

Lens construction: 19 elements in 12 groups

Diagonal angle of view: 78 degrees (at 30 feet) to 27 degrees (at 50 feet)

Focus adjustment: AF with full-time manual

Closest focusing distance: 1.15 feet

Zoom system: 5-group helical zoom (front group moves 27mm)

Filter size: 77mm

Dimensions: 3.3 inches in diameter, 4.4 inches long

Weight: 22.8 ounces

There's no doubt that the Canon EF S 17 55mm f2 8 IS USM is one wonderful lens. So far as 1.6x crop lenses go there is no other lens on the market nowadays that gives you the ideal combination of a workable zoom range, aesthetically nice depth of field, image stabilization and to top it off a very quick and very accurate auto focus.

As if that wasn't enough, the image quality rivals that of lenses costing many thousands of dollars and should not be overlooked as your next lens choice or just an upgrade to the popular but fundamental EF-S 18-55 mm kit lens.

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