Very Popular wide angle zoom lens, probably Sigmas best selling lens.

Fits all "C" size sensor camera not full frame cameras.

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 (9.4inch) at all focal lengths. It is also equipped with an integral Petal-type hood to block out extraneous light.

Technical Specifications-

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