Sigma 24-70mm F2.8 DG Canon - Description:
To achieve an F2.8 aperture at all focal lengths, Sigma 24-70mm f/2.8 DG lens employs three aspherical Lens to provide optimum aberration compensation. Two Special Low Dispersion (SLD) glass elements are provided in the 24-70mm f/2.8 DG for color aberration compensation, to assure high image quality.

The Sigma 24-70mm f/2.8 DG lens has optimized for digital SLR cameras
24-70mm f/2.8 DG Lens incorporates "Super Multi Layer Coating" to reduce the influence of harmful light caused by reflections from the digital image sensor.

Excellent correction of aberrations in the Sigma 24-70mm f/2.8 DG lens:
Two SLD elements, one Glass Mold Aspherical plus two Hybrid Aspherical lenses in 24-70mm f/2.8 DG provide excellent correction of various aberrations and a high level of optical performance.

Minimum focusing distance of 40cm in the 24-70mm f/2.8 DG Lens
The 24-70mm f/2.8 DG lens has a minimum focusing distance of 40cm (15.7 inches) at all focal lengths and is capable of macro photography with a maximum magnification ratio of 1:3.8.

DF (Dual Focus) System In The Sigma 24-70mm f/2.8 DG lens:
This 24-70mm f/2.8 DG Zoom lens incorporates a Dual Focus (DF) system that is designed to make the lens easy to hold during autofocusing, and yet provides a large focus ring for easy manual focusing.

The Sigma 24-70mm f/2.8 DG has got Petal Type Hood:
Since the front of the 24-70mm f/2.8 DG lens does not rotate, a Petal-type hood and circular polarizing filters can be easily used.

The Sigma 24-70mm f/2.8 DG Specifications:

Sigma 24-70mm f/2.8 DG Zoom lens Mount fitting : Sigma 24-70mm f/2.8 DG fits all Canon EOS Digital and Film cameras.
Sigma 24-70mm f/2.8 DG Lens Construction : 14 elements in 13 groups
Angle of view : 84.1°-34.3°
F stop range : f32
Closest Focusing Distance 40cm / 15.7"
Maximum Magnification 1:3.8
Filter Size 82mm
Dimensions of are (Length x Diameter) 88.6x115.5mm / 3.5x4.5"
Full Extended Length 152.5 mm / 6.0 "
Weight of Sigma 24-70mm f/2.8 DG lens without packages : 700g / 24.7oz.

The Sigma 24-70mm f/2.8 DG Included accessories:
Sigma rear and front Caps
Sigma 24-70mm f/2.8 DG lens Hood
24-70mm f/2.8 DG lens Soft Case
The Sigma 24-70mm f/2.8 DG lens User Guide