The Sigma 120-300mm f/2.8 EX APO DG IF HSM telephoto zoom 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 to determine the picture composition without having to change the vantage point.
The use of Apochromatic design and SLD glass elements, an AF drive is equipped with the silent, responsive and high speed Hyper Sonic Motor, Internal Focusing, all ensure optimal quality and usability. The DG design makes it fully optimized for use with digital SLR cameras
Large aperture of F2.8 at 300mm
focal length and 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. It 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.
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
(optional)
High-speed focusing is possible when this lens is used with
dedicated APO EX tele-converters (1.4x and 2x). By adding an APO tele-converter,
which is sold separately, you can use this lens as a 168-420mm F4 AF tele-zoom
lens with a 1.4x tele-converter, or as a 240-600mm F5.6 AF ultra-telephoto zoom
lens with a 2x tele-converter. It is also possible to use AE (Automatic
Exposure) function, even EX Tele-converters are attached to the lens.
