Sigma 10-20mm f/4-5.6 EX DC HSM Lens for Nikon Digital SLR Cameras
Designed exclusively for Nikon digital SLR cameras capable of wide-angle photography, the Sigma 10-20mm f/4-5.6 lens is a powerful tool for landscape photography and other wide-angle applications. The lens offers an ultra-wide angle of view of 94.5 to 56.8 degrees, with three special low dispersion (SLD) glass elements and three aspherical lenses providing optimum image quality throughout the entire zoom range. The lens also incorporates a Hyper Sonic Motor (HSM) to ensure quiet, high-speed autofocusing in addition to full-time manual focusing. Other features include a close focusing distance of 9.4 inches, a non-rotating lens barrel that perfectly suits the petal-shaped lens hood (included), and a one-year warranty.SpecificationsFocal length: 10-20mmMaximum aperture: f/4-5.6Lens construction: 14 elements in 10 groupsAngle of view: 94.5 to 56.8 degreesNumber of diaphragm blades: 6Minimum aperture: f/22Minimum focusing distance: 9.4 inchesMaximum magnification: 1:6.7Mount: NikonFilter size: 77mmFilter size: Petal-type hoodDimensions: 3.3 inches in diameter and 3.4 inches longWeight: 17.5 ouncesWarranty: 1 year