The Sigma 120-300mm f/2.8 EX DG OS APO HSM AF Lens provides a large constant f/2.8 maximum aperture at all focal lengths. In essence, it transforms a large-aperture 300mm f/2.8 lens into a zoom lens that allows you to determine the picture composition without having to change your vantage point. Optical image stabilization facilitates hand-held photography by allowing you to shoot at shutter speeds 4 stops slower than without the stabilization.

The use of Apochromatic design, SLD and FLD glass elements for correction of chromatic aberrations, and super multi-layers to reduce flare and ghosting deliver superb image quality.  The autofocus drive is equipped with the silent, responsive and high speed Hyper Sonic Motor and  internal focusing for a highly functional professional lens.  The DG design makes it fully optimized for use with digital SLR cameras.

DG Lens Design

The improved DG lens design corrects for various aberrations. This lens is specially coated to get the best color balance while cutting down on ghosting caused by reflections from the digital image sensor.

SLD Glass and Aspherical Lenses

The use of Apochromatic design, 1 SLD (Special Low Dispersion) glass element and 2 FLD elements give full correction of chromatic aberration and provide a high level of optical performance.

Internal Focusing and Internal Zooming

This lens incorporates an internal focusing system, which eliminates front lens rotation, allowing the use of a Perfect Hood and a circular polarizing filter. Handholding is easy since focusing and zooming do not change its overall length.

Tripod Mount

The rotating tripod mount can be conveniently detached if required.

Specifications

Filter Size	105mm
f/Stop Range	f/2.8-22
Minimum Focus Distance	4.9-8.2' (1.5-2.5 m)
Magnification	1:8.1 (at 200mm focal length)
Angle of View	20.4 to 8.2 Degrees
Groups/Elements	18/23
Diaphragm Blades	9
Tripod Collar	Yes (removable)
Length	11.4" (29 cm)
Maximum Diameter	4.5" (11.4 cm)
Weight	5.7 lb (2.6 kg)

Includes

• Sigma 120-300mm f/2.8 EX DG OS APO HSM AF Lens
• Front & Rear Lens Caps
• Case
• Lens Hood
• Strap