Sigma EX 2.8/70-200 DG SI/AF OS HSM

This large aperture telephoto zoom lens, incorporating Sigma's original Optical Stabilizer function, covers focal lengths from 70mm to 200mm and offers a constant aperture of F2.8 over the entire zoom range. The OS function offers the use of shutter speeds approximately 4 stops slower than would otherwise be possible. It makes shooting easy for many types of photography such as portraits and sports. Two FLD ("F" Low Dispersion) glass elements, which have performance equal to fluorite glass, and three SLD (Special Low Dispersion) glass elements provide excellent correction of color aberration. Super multi-layer coating reduces flare and ghosting. The lens incorporates HSM (Hyper Sonic Motor), ensuring a quiet and high speed AF as well as full-time manual focus capability.

• Compact construction
  This lens has a compact construction with a diameter of 86.4mm (3.4in. ), overall length of 197.6mm (7.8in. ). This compact and lightweight construction makes it ideal for many types of photography such as portraits, landscapes and sports.
• Excellent optical performance
  This lens features two FLD glass elements, which have the performance equal to fluorite glass, and three SLD (Special Low Dispersion) glass elements providing excellent correction of color aberration. The super multi-layer coating reduces flare and ghosting and ensures high contrast images. High image quality is assured throughout the entire zoom range.
• High speed and quiet AF
  The lens incorporates HSM (Hyper Sonic Motor), ensuring high speed and quiet AF as well as full time manual focus capability.
• Inner focusing and inner zooming system
  The lens design incorporates an inner focusing and inner zooming systems. The overall length of the lens does not change during focusing and zooming, ensuring convenient handling. The inner focusing system also eliminates front lens rotation, making the lens particularly suitable for using circular polarizing filters and the supplied petal-type lens hood.
• Close focusing capability
  This lens has a minimum focusing distance of 140cm (55.1in. ) throughout the entire zoom range and a maximum magnification ratio of 1:8.