The Canon EF S 17 55mm f2 8 IS USM Lens is a superb, high quality lens that's basically produced 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 renowned and highly regarded Canon L series range.
The main reason behind this is a large round aperture that creates a shallow depth of field and extremely high quality low dispersion aspherical lens elements that make certain that you get marvelous image quality across the entire zoom range.
This lens also has another vital and equally as amazing option - image stabilization. This implies that the camera can accommodate for camera shake under some conditions, enabling you to shoot in low light more regularly and with more confidence that your images will still be of the finest quality.
Moreover, the EF S 17 55 f 2.8 IS USM showcases a simple to use, ring-type ultra-sonic motor and an extremely quick and user-friendly auto focus system, that is a real pleasure to use.
Product specifications and critical data:
Focal length: 17-55 millimeters
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 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 magnificent lens. So far as 1.6x crop lenses go there's simply no other lens available at present that gives you the ideal combination of a workable zoom range, aesthetically nice depth of field, image stabilization and to top it off an extremely quick and very exact auto focus.
As if that was not sufficient, the image quality rivals that of lenses costing some thousands of dollars and should not be overlooked as your next lens choice or just an upgrade to the admired but fundamental EF-S 18-55 millimeters kit lens.
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