Sigma 28mm F1.8 EX DG ASP Macro Wide-Angle Lens for Canon DSLR Cameras

For many photographers, the 28mm focal length is the ideal general-purpose wide-angle lens. Its wide enough for most scenic and landscape assignments and when used indoors for building interiors or groups of people, its wide angle effect is not as extreme as with shorter focal length lenses. A forgiving wide angle lens for newcomers to wide angle photography and highly effective for professionals with its EX construction and fast 1.8 aperture. This high-speed performance is excellent for photojournalists doing low-light documentary photography and its use of two aspherical lens elements assures excellent Optical performance.

Features

Designed for use with full frame Digital SLR cameras. May also be used with smaller APS-c size sensors

Two Aspherical glass elements offer correction for distortion

Capable of Macro photography with minimum shooting distance of 7.9 inches and provides a reproduction ratio of 1:2.7

Floating optic focusing system optimizes this lens for various working distances in order to provide excellent quality images

A non-rotating front lens makes it suitable for a petal-type hood and polarizing filters

A lens hood, front/rear lens cap and carrying case are included with the lens

Specifications

Lens Construction: 10 Elements in 9 Groups

Angle of View: 75.4º

Number of Diaphragm Blades: 9

Minimum Aperture: f22

Minimum Focusing Distance: 20 cm / 7.9 in.

Filter Size (mm): 77mm

Maximum Magnifications: 1:2.9

Corresponding Mounts: Canon (ASP, EX, DG)

Dimensions (Diameter x Length): 83 x 80 mm / 3.3 x 3.1 in.

Extended Dimensions: 88.9 mm / 3.5 in.

Weight: 480 g / 16.9 oz.