Sigma 17-70mm f/2.8-4.5 DC IF Macro Lens for Canon Digital SLR Cameras

Sigma 17-70mm f/2.8-4.5 DC IF Macro Lens for Canon Digital SLR ...

Publisher : SIGMA
Company : Sigma
List Price: ~~$369.00~~

Features

Lens Construction - 15 Elements in 12 Groups
Angle of View - 72.4 - 20.2 degrees
7 Diaphragm Blades
Minimum Aperture F22
Minimum Focusing Distance - 20cm (7.9 inches)

Product Description

Sigma 17-70mm f/2.8-4.5 DC IF Macro Lens for Canon Digital SLR Cameras

Amazon.com Product Description

Designed for Canon digital SLR cameras, the Sigma 17-70mm f/2.8-4.5 macro lens performs superbly even in relatively low light conditions, such as indoors or at dusk. The lens incorporates an inner focusing system that provides a fast autofocus speed while also preventing the front of the lens from rotating. This makes it particularly suitable for use with circular polarizing filters and petal-shaped lens hoods. The lens is also equipped with a zoom lock switch that eliminates "zoom creep" during transportation. And thanks to the special low dispersion (SLD) element and two aspherical elements, the lens corrects for all types of aberrations and produces a high level of optical performance throughout the entire zoom range. Other features include a minimum focusing distance of 7.9 inches, a maximum magnification ratio of 1:2.3, and a multilayer lens coating that reduces flare and ghosting. All Sigma lenses carry a one-year warranty.

Specifications

Focal length: 17-70mm
Maximum aperture: f/2.8-4.5
Lens construction: 15 elements in 12 groups
Angle of view: 72.4 to 20.2 degrees (Sigma SD format)
Number of diaphragm blades: 7
Minimum aperture: f/22
Minimum focusing distance: 7.9 inches
Maximum magnification: 1:2.3
Filter size: 72mm
Corresponding AF mounts: Canon
Dimensions: 3.1 inches in diameter and 3.2 inches long
Weight: 16.0 ounces
Warranty: 1 year

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