The Canon EF S 17 55mm f2 8 IS USM Lens is a tremendous, top quality lens that is primarily made for the EF-S zoom lens range, though the image quality is very good that some have compared it to being on par with that of the admired and highly regarded Canon L series range.

The key reason behind this is a big circular aperture that produces a shallow depth of field and extremely high quality low dispersion aspherical lens elements that ensure you get marvelous image quality across the entire zoom range.

This lens also has an additional critical and equally as impressive feature - image stabilization. This implies that the camera can accommodate for camera shake under many conditions, permitting you to shoot in low light more regularly and with more self confidence that your images will still be of the greatest quality.

Furthermore, the EF S 17 55 f 2.8 IS USM features a simple to use, ring-type ultra-sonic motor and an extremely quick and user-friendly auto focus system, that is a real enjoyment to use.

Product specs and significant 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 ft) to 27 degrees (at 50 ft)

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: 77mm

Dimensions: 3.3 in. in diameter, 4.4 in. long

Weight: 22.8 ounces

There is no doubt that the Canon EF S 17 55mm f2 8 IS USM is one great lens. So far as 1.6x crop lenses go there's simply no other lens available these days that gives you the perfect combination of a useful zoom range, aesthetically pleasing depth of field, image stabilization and to top it off a very quick and very precise auto focus.

As if that was not sufficient, the image quality rivals that of lenses costing some thousands of dollars and should not be ignored as your next lens selection or simply an upgrade to the popular but fundamental EF-S 18-55 millimeters kit lens.

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