SPECIFICATIONS:

This lens covers the telephoto range from 300mm to the ultra-telephoto range up to 800mm. By continuously varying the angle of view from 8.2º to 3.1º, the lens takes a lot of the footwork out of picture composition.

• ELD (Extraordinary Low Dispersion) glass
  This digitally optimised lens covers the ultra-telephoto range up to 800mm and has a fast maximum aperture. Its new lens coating reduces flare and ghosting, a common problem with digital cameras and also creates an optimum colour balance.
• ELD Glass
  The lens incorporates two ELD (Extraordinary Low Dispersion) glass elements for effective compensation of chromatic aberrations and ensure sharp, quality images with high contrast.
• HSM (Hyper Sonic Motor)
  The addition of an HSM (Hyper Sonic Motor) makes fast, silent AF function a reality. The lens is also capable of full-time manual focus.
• Internal Focusing and Internal Zooming
  Focusing and zooming do not change the lens' overall length, ensuring it's easy of use either handheld or on a tripod.
• Rear Filter System
  A 46mm filter can be inserted near the rear of the lens, and the included circular polarizing filter can be used in situ.
• Included Tripod Bush
  A heavy duty tripod bush is included as standard for use with tripods and monopods. Multiple threaded holes allow accurate balancing of lens and camera body. This is also designed as an easy grip when carrying the lens.
• With optional Sigma Apo Tele Converters
  When this lens is used with the 1.4x EX or 2x EX Apo Tele Converters (optional), it becomes a 420-1120mmF8 MF lens or a 600-1600mm F11 MF lens respectively.

• Lens Construction 18 Elements in 16 Groups
  
• Angle of View 8.2 - 3.1 degrees
  
• Number of Diaphragm Blades 9 Blades
  
• Minimum Aperture F32
  
• Minimum Focusing Distance 600cm
  
• Maximum Magnification 1:6.9
  
• Filter Size 46mm Rear
  
• Dimensions Diameter 156.5mm X Length 544mm
  
• Weight 5880g
  
  
  
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