The Sigma 24-70mm f/2.8 IF EX DG HSM Lens is a large aperture standard zoom lens that is ideal for photojournalism and general pro photography.

1. Sigma 24-70mm f/2.8 IF EX DG HSM Autofocus
Lens for Canon
Description:
The Sigma 24-70mm f/2.8 IF EX DG HSM Lens is a large aperture standard zoom
lens that is ideal for photojournalism and general pro photography. The lens
covers focal lengths from 24mm wide angle to 70mm medium telephoto, with a
bright viewfinder, and easy AF/MF all the way through. When used with Canon
digital SLR cameras with APS-C size sensors, the focal length offered by this lens
will be equivalent to 38-112mm, in 35mm SLR terms.

2. The Hyper Sonic Motor (HSM) ensures a silent, high-speed AF function as well as
full-time manual focusing capability. This lens features Super Multi Layer Coating,
which reduces flare and ghosting. DG is a designation Sigma uses on lenses
featuring optical systems designed to meet the performance characteristics of
digital SLR cameras. In addition, this lens has been redesigned and is now more
compact and lighter than its predecessor.
DG Lens Design
The improved DG lens design corrects for various aberrations. This lens is specially
coated to get the best color balance while also cutting down on ghosting caused
by reflections from the digital image sensor.
HSM (Hyper Sonic Motor)
Hyper Sonic Motor provides smooth, silent AF with fulltime manual focus
override
ELD & SLD Elements
This lens uses three ELD (Extraordinary Low Dispersion) elements and two SLD
(Special Low Dispersion) elements for correction against chromatic aberrations
9-Blade Aperture
The rounded 9-blade diaphragm opening makes out-of-focus elements appear
more natural
Technical Specification:
Focal Length 24 - 70 mm
Aperture Maximum: f/2.8
Minimum: f/22
Camera Mount Type Canon EF
Format Compatibility 35mm Film / Full-Frame Digital Sensor
Canon (APS-C)
Angle of View 84.1° - 34.3°
Minimum Focus Distance 1.25' (38.10 cm)
Magnification 0.18x
Maximum Reproduction Ratio 1:5.3

3. Groups/Elements 12/14
Diaphragm Blades 9
Features
Image Stabilization No
Autofocus Yes
Tripod Collar No
Physical
Filter Thread 82 mm
Dimensions (DxL) Approx. 3.5 x 3.7" (8.89 x 9.40 cm)
Weight 1.74 lb (790 g)
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