This large aperture telephoto zoom lens has a minimum focusing distance of 100cm (39.4") and has a maximum magnification ratio of 1:3.5 and it is optimized for digital SLR cameras. This lens' super multi layer lens coating reduces flare and ghost, which is a common problem with digital cameras. ELD (Extraordinary Low Dispersion) glasses and SLD "Special Low Dispersion" glasses are used for utmost correction against chromatic aberrations, high image quality is assured throughout the entire zoom range. This large aperture telephoto zoom lens has a minimum focusing distance of 100cm (39.4") throughout the entire zoom range. It is very convenient for close-up photography.

Sigma 70-200mm Macro Lens
It maintains a greater working distance that enables you to capture the small animals and insects without disturbing them. 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. It is compatible with full-frame digital SLR cameras as well as offers high performance with both digital or film SLR cameras

Extraordinary Low Dispersion
This lens uses two ELD (Extraordinary Low Dispersion) glasses and two SLD "Special Low Dispersion" glasses for utmost correction against chromatic aberrations. High image quality is assured throughout the entire zoom range. The HSM models provide ultra quiet high-speed autofocusing as well as full-time manual focus override.

Inner focus and inner zoom systems
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. An inner focusing system also eliminates front lens rotation, making the lens particularly suitable for using the petal-type lens hood supplied and circular polarizing filters. A removable tripod collar (Sigma TS-21) is included as a standard component. When this lens is used with the 1.4x EX DG APO or 2x EX DG APO Tele Converters (optional), it becomes a 98-280mm F4 AF telephoto zoom lens or a 140-400mm F5.6 AF telephoto zoom lens respectively.

Features:

• Lens Construction: 18 Elements in 15 Groups
  
• Angle of View: 34.3 - 12.3 degrees
  
• Number of Diaphragm Blades: 9 Blades
  
• Minimum Aperture: 22
  
• Minimum Focusing Distance: 100cm (39.4 inches)
  
• Maximum Magnification: 1:3.5
  
• Filter Size: Diameter 77mm
  
• Dimensions: Diameter 86.6mm X Length 184.4mm
  
• Weight: 1,345 (2 lbs 5 ounces)
  
• Corresponding AF Mounts: Sigma, Canon, Nikon

About Sigma
After nearly 40 years of pioneering new and better ways to capture and portray the ordinary - and extraordinary - Sigma is still creating new avenues of expression with innovative designs and enhancements in zoom and non-zoom lenses and single lens reflex cameras. As one of the first manufacturers to successfully introduce the interchangeable lens, Sigma's well-earned reputation for originality, innovation and leadership is your guarantee of the world's most advanced line of photographic products. Products you and millions of photographers worldwide turn to when quality, reliability and professional results count most.