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

The main reason behind this is a big round aperture that creates a shallow depth of field and high quality low dispersion aspherical lens elements that ensure you have excellent image quality across the entire zoom range.

This lens also has another crucial and equally as amazing option - image stabilization. This means that the camera can accommodate for camera shake under many situation, allowing you to shoot in low light more regularly and with more confidence that your images will still be of the greatest quality.

Moreover, the EF S 17 55 f 2.8 IS USM showcases an easy to use, ring-type ultra-sonic motor and an extremely fast and intuitive auto focus system, that is a real pleasure to use.

Product specs and vital data:

Focal length: 17-55 millimeters

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 full-time manual

Closest focusing distance: 1.15 feet

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

Filter size: 77mm

Dimensions: 3.3 inches in diameter, 4.4 in. long

Weight: 22.8 ounces

There's no doubt that the Canon EF S 17 55mm f2 8 IS USM is one excellent lens. As far as 1.6x crop lenses go there's no other lens on the market now that gives you the ideal combination of a useful zoom range, aesthetically nice depth of field, image stabilization and to top it off an extremely fast and very precise auto focus.

As if that wasn't enough, the image quality rivals that of lenses costing some thousands of dollars and should not be overlooked as your next lens selection or just an upgrade to the admired but basic EF-S 18-55 millimeters kit lens.

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