Sigma 120-300mm F2.8 APO EX DG HSM announced

Sigma launch 120-300mm F2.8 APO EX DG HSM lens that transforms the classic large-aperture f/2.8 300mm lens into a zoom lens allowing you to determine the picture composition without having to change your vantage point.

Two SLD (the special low dispersion) glass elements in front group and another SLD element is used in the rear group for excellent correction of chromatic aberration. The new lens coating reduces flare and ghost, a common problem with digital cameras and also creates an optimum natural colour balance.

Since focusing and zooming do not change its overall length, this lens offers ease of handling. HSM ensures a quiet, high-speed, AF as well as full-time manual focus (for Sigma, Canon and Nikon mounts). Tripod Socket (TS-41) is supplied as a standard accessory. Circular polarising filters can easily be used as the front of the lens does not rotate. When this lens is used with the 1.4x EX or 2x EX Apo Tele Converters (optional), it becomes a 168-420mmF4 AF telephoto lens or a 240-600mm F5.6 AF ultra-telephoto lens respectively.

Specifications
Focal Length 120-300mm
Minimum Aperture f/32
Lens Construction 18 Elements in 16 Groups
Angle of View 20.4°- 8.2°
Number of Diaphragm Blades 9pcs
Minimum Focusing Distance 150cm(59”)-250cm(98“)
Maximum Magnification 1:8.6
Filter Size 105mm
Lens Hood Bayonet Hood
Dimensions Diameter 112.8mm (4.4”) x Length 271mm (10.6”)
Weight 2600gr/91.71oz
Fittings Sigma, Canon and Nikon-D