Sigma APO 120-300mm F2.8 EX DG HSM. By adding an APO tele-converter, you can use this lens as a 168-420mm F4 AF tele-zoom lens with a 1.4x tele-converter. The base lens has a large aperture of F2.8 at 300mm focal length [without teleconverter] and is optimized for used with digital SLR cameras. This lens transforms a large-aperture F2.8 300mm lens into a zoom lens that allows you to determine the picture composition you want without having to change your vantage point.

The Sigma APO 120-300 f2.8 has two SLD (the special low dispersion) glass elements in front group and another element of SLD is being used for rear group for excellent correction of chromatic aberration.

Sigma Apo Tele Converters

High-speed focusing is possible when this lens is used with dedicated APO EX tele-converters (1.4x). By adding an APO tele-converter, you can use this lens as a 168-420mm F4 AF tele-zoom lens with a 1.4x tele-converter. It is also possible to use AE (Automatic Exposure) function, even EX Tele-converters are attached to the lens.

New coating reduces Ghost and Flare

The new multi layer lens coating and lens design reduce flare and ghost, which is a common problem with digital cameras and also creates an optimum color balance through the entire zoom range.

Hyper sonic motor

The AF drive for Sigma SA, Canon and Nikon cameras is equipped with a silent, responsive and high speed HSM , which also provides full-time manual focus function.

Inner Focusing and Inner Zooming

Since focusing and zooming do not change its overall length, this lens is easy to hold and use. In addition, since the front of the lens does not rotate, a circular polarizing filter can be easily attached and use.

Sigma Apo Tele Converters

High-speed focusing is possible when this lens is used with dedicated APO EX tele-converters (1.4x). By adding an APO tele-converter, you can use this lens as a 168-420mm F4 AF tele-zoom lens with a 1.4x tele-converter. It is also possible to use AE (Automatic Exposure) function, even EX Tele-converters are attached to the lens.