Canon 17-55mm f2.8 IS EF-S USM Lens Disco

To meet user demands for a fast EF-S zoom lens, Canon has specially designed a new lens with a large aperture of f/2.8 for select Canon Digital SLR cameras. The large circular aperture produces a shallow depth-of-field, creating background blur that draws attention to the photographic subject. The lens construction includes UD and aspherical elements, which deliver impressive image quality throughout the entire zoom range. Image Stabilizer lens groups shift to compensate for camera movement so that the image appears steady on the image plane, ensuring clear, crisp images, even in dim light. With a Ring-type USM, inner focusing and new AF algorithms, this lens achieves autofocus quickly and quietly, and with full-time mechanical manual focusing, manually adjusting the focus is possible even in AF mode.Professional photographers and advanced amateurs with APS-C size digital SLRs now have access to the fastest Canon EF-S zoom lens yet. Three-stop optical image stabilization along with three aspherical and two UD elements combine to make this new lens a must have item for owners of the EOS Digital SLRs.With an effective focal length range of approximately 27-88mm (35 mm equivalent), the EF-S 17-55mm f/2.8 IS USM is a powerful lens that delivers remarkable image quality. The wide angle zoom allows you to capture more of every scene and add a new sense of space and perspective to your photography.The large f/2.8 aperture provides excellent results in low light conditions. The aperture remains constant through the full focal length range, allowing you to zoom from approximately 27-88mm (35 mm equivalent) without slowing shutter speed.Specifications:

·Focal Length: 17 - 55mm

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·Maximum Aperture: 1:2.8

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·Lens Construction: 19 elements in 12 groups

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·Diagonal Angle of View: 78°30' - 27°50'

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·Focus Adjustment: AF with full-time manual

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·Closest Focusing Distance: 1.15 ft. / 0.35m

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

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·Filter Size: 77mm

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·Maximum Diameter x Length: 3.3 in. x 4.4 in. / 83.5mm x 110.6mm

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·Weight: 22.8 oz. / 645g (lens only)Please Note: Extenders EF1.4x II and EF2x II are NOT compatiblePlease Note: Compatible with EOS Digital SLRs onlyNote: Hood: EW-83J (bayonet, petal form, two-claw removable hood; attachable in reverse)

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