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The Canon EF S 17 55mm f2 8 IS USM Lens is a tremendous, high quality lens that is primarily designed for the EF-S zoom lens range, though the image quality is so good that some have compared it to being on par with that of the renowned and reputable Canon L series range.

The key reason behind this is a large circular aperture that produces a shallow depth of field and high quality low dispersion aspherical lens elements that make certain that you have marvelous image quality across the full zoom range.

This lens also has an additional important and equally as amazing feature - image stabilization. This means that the camera can accommodate for camera shake under some situation, permitting you to shoot in low light more regularly and with higher self confidence that your images will still be of the best quality.

In addition, the EF S 17 55 f 2.8 IS USM features an easy to use, ring-type ultra-sonic motor and an extremely fast and user-friendly auto focus system, that is a true enjoyment to use.

Product specifications and vital data:

Focal length: 17-55 mm

Maximum aperture: f/2.8

Lens construction: 19 elements in 12 groups

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

Focus adjustment: AF with fulltime manual

Closest focusing distance: 1.15 feet

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

Filter size: 77 millimeters

Dimensions: 3.3 in. in diameter, 4.4 inches long

Weight: 22.8 ounces

There is no doubt that the Canon EF S 17 55mm f2 8 IS USM is one wonderful lens. As far as 1.6x crop lenses go there's no other lens available at present that offers you the perfect combination of a workable zoom range, aesthetically pleasing depth of field, image stabilization and to top it off a very fast and very exact auto focus.

As if that wasn't sufficient, the image quality rivals that of lenses costing some thousands of dollars and shouldn't be ignored as your next lens choice or simply an upgrade to the popular but basic EF-S 18-55 millimeters kit lens.

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