SIGMA APO 120-300mm F2.8 EX DG OS HSM

The Sigma Corporation is pleased to announce the new Sigma APO 120-300mm F2.8 EX DG OS HSM. The successor to the APO 120-300mm F2.8 EX DG HSM, introduced to market in July 2005, this new lens offers the latest optical design technology.

This large aperture zoom lens features Sigma’s OS (Optical Stabilizer) function and weather-resistant design throughout for use in harsh conditions. One SLD and Two FLD glass elements are used for maximum correction of chromatic aberrations. The super multi-layer lens coating reduces flare and ghosting, and the lens design incorporates an inner focusing and inner zooming system to ensure sharp images throughout the entire zoom range. Improved optical performance provides excellent correction of sagittal coma flare, and ensures ultra-high resolution, comparable to a fixed focal length lens. The OS function offers the use of shutter speeds approximately 4 stops slower than would otherwise be possible. This system enables hand held tele-photography. Incorporation of HSM (Hyper Sonic Motor) ensures quiet and high speed AF, while allowing full-time manual focus override. The rounded 9 blade diaphragm creates an attractive blur to the out of focus areas of the image. The addition of the optional APO TELE CONVERTER produces an ultra telephoto zoom lens with AF.

This product is showcased at Photokina 2010 in Koln, Germany.

*Lens Construction:23 Elements in 18 Groups *Angle of View:20.4-.8.2 degrees *Number of blades:9 pcs (Rounded diaphragm) *Minimum Aperture:F22 *Minimum Focusing Distance:150-250cm / 59.1-98.4in. *Maximum Magnification::1:8.1 (f=200mm) *Filter Size::Diameter 105mm *Lens Hood::Bayonet Type (LH1128-01) supplied *Dimensions::Diameter 114.4mmxLength 289.2mm / 4.5in.x11.4in. *Weigh::TBD

* Nikon mounts do not have an aperture ring. Some functions may not work depending on the camera model. * For Nikon and Canon mounts, Optical Stabilizer (OS) function will not work with film SLR cameras except Nikon F6 and Canon EOS-1V. * FLD glass is the highest level low dispersion glass available with extremely high light transmission. This optical glass has a performance equal to fluorite glass which has a low refractive index and low dispersion compared to current optical glass. It also benefits from high anomalous dispersion. These characteristics give excellent correction for residual chromatic aberration (secondary spectrum) which cannot be corrected by ordinary optical glass and ensures high definition and high contrast images.