SPECIFICATIONS:

Fast maximum aperture telephoto lens optimized for digital SLR cameras. This ultra-telephoto lens has a fast maximum aperture, and also features a new super multi-layer coating, which optimizes the characteristics of digital SLR cameras.

• ELD Glass
  Two ELD glass elements in the front lens elements reduce chromatic aberration to a minimum and also ensure sharp, quality images of high contrast.
• Internal Focusing System
  The Internal Focus system ensures the overall length of the lens does not change during focusing, ensuring convenient handling and ease of use.
• HSM Focusing
  Sigma’s Hyper Sonic Motor (HSM) ensures ultra-quiet and high-speed auto-focusing and full time manual focus overide.
• Rear Filter System
  A drop-in 46mm filter holder in the rear part of the lens barrel, which can be rotated to facilitate the use of filters, including a polarizing filter which comes included with the lens.
• Teleconverters
  By adding an APO teleconverter (optional extra), you can use this lens as a 700mm F6.3 MF ultra-telephoto lens with a 1.4X EX teleconverter, or as a 1000mm F9 MF ult ra-telephoto lens with a 2X teleconverter.

• Lens Construction 11 Elements in 8 Groups
  
• Angle of View 5 degrees
  
• Number of Diaphragm Blades 9
  
• Minimum Aperture F32
  
• Minimum Focusing Distance 400cm
  
• Maximum Magnification 1:7.7
  
• Filter Size 46mm (drop-in type)
  
• Dimensions Diameter 123mm X Length 350mm
  
• Weight 3150g
  
  
  

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