SPECIFICATIONS:

The super wide-angle capability of the 10-20mm zoom makes it a very powerful tool for both indoor and landscape photography. It is specifically designed to optimise results with digital SLR cameras encorporating APS-C size image sensors or smaller. Aspherical lenses provide maximum correction for distortion and various aberrations; high image quality is displayed throughout the entire zoom range. The HSM equipped models makes fast AF speeds and quiet shooting a reality, and it is also capable of full-time manual focus. It has a minimum focusing distance of 24cm (9.4”) at all focal lengths. It is also equipped with an integral Petal-type hood to block out extraneous light.
10-20mm F4-5.6 EX DC HSM lens allows enjoyment of super wide-angle photography making it a very powerful tool for indoor and landscape photography with APS-C size image sensors of digital SLR cameras. Offering an ultra-wide angle of view 102.4 - 63.8 degrees ( when used with a Sigma SD camera)

• Most Appropriate Coating for Digital SLR Cameras
  The new multi-layer lens coating and lens design reduce flare and ghosting, a common problem with digital cameras and also creates an optimum colour balance through the entire zoom range.
• SLD and Aspherical Lens Elements
  Three SLD (Special Low Dispersion) glass elements ensure ulta-high resolution and sharpness. One glass mold and two hybrid aspherical lenses offer excellent correction for distortion, as well as all types of optical and colour aberrations.
• Inner Focus System
  This lens incorporates an internal focusing system, which eliminates front lens rotation, allowing the use of a petal-type hood and also minimize fluctuation of aberration caused by focusing system.
• HSM (Hyper Sonic Motor)
  The HSM equipped models ensure a silent, high-speed AF function as well as full-time manual focusing capability for Sigma, Canon, and Nikon-D mount lenses.
• Minimum focusing distance of 24cm (9.4”) at all focal lengths
  This lens has a minimum focusing distance of 24cm (9.4”) throughout the entire zoom range.
  
  
  

• Lens Construction 14 Elements in 10 Groups
  
• Angle of View (SD Format) 102.4 - 63.8 degrees
  
• Number of Diaphragm Blades 6 Blades
  
• Minimum Aperture F22
  
• Minimum Focusing Distance 24cm
  
• Maximum Magnification 1:6.7
  
• Filter Size 77mm
  
• Dimensions Diameter 83.5mm X Length 81mm
  
• Weight 470g
  
  

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