This is a great ultra-wide zoom lens has a wide angle of view from 102.4 - 63.8 degrees (when Sigma mount is used) and it is exclusive to digital SLR cameras.

I don't personally own one, but somebody was kind enough to let me use His and it was brand new.    I have to say that I was real lucky that day.

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.

Its sharpness remains constant throughout the zoom range, and its compact size makes it an ideal companion for shooting travel, landscapes or architectural photography.

• Lens Construction 14 Elements in 10 Groups
• Angle of View 102.4 - 63.8 degrees
• Number of Diaphragm Blades 6
• Minimum Aperture F22
• Minimum Focusing Distance 24 cm or 9.4 in.
• Maximum Magnification 1:6.7
• Filter Size Diameter 77mm
• Dimensions Diameter 83.5mm X Length 81mm or 3.3 in. X 3.2 in.
• Weight 465g. or 16.4 oz
• Corresponding AF Mounts are as follows; Sigma, Canon, Nikon, Sony/Minolta, Pentax, FOUR THIRDS

• this lens is great, for outdoor shoots or when you are touring the city or country side with real Wide-Angle view
• image on the left was taken with a Canon EOS 1000D Rebel
  • f/4.5 @ ISO 800
  • 10mm, Shutter Priority @ 1/50 sec.