Features:
Lens Construction: 14 Elements in 10 Groups Angle of View: 102.4 - 63.8 degrees (Sigma SD format) Number of Diaphragm Blades: 6 Blades Minimum Aperture F22 Minimum Focusing Distance: 9.4 in. (24cm) Maximum Magnification: 1:6.7 Filter Size: Diameter 77mm Lens Hood: Petal Hood Dimensions: Diameter 3.3 in. x Length 3.2 in. (Diameter 83.5mm x Length 81mm) Weight: 16.6 oz. (470g) Corresponding AF Mount: Nikon
Product Description:
Sigma's 10-20mm F4-5.6 EX DC HSM lens allows enjoyment of super wide-angle photography and it is a very powerful tool for indoor shooting and landscape photography with APS-C size image sensors of digital SLR cameras. Wide angle of view (102.4-degrees at 10mm and 63.8-degrees at 20mm) offers the photographer greater freedom of expression. Three SLD glass elements are employed for effective compensation of color aberration, which is a common problem with super-wide angle lenses. One piece of glass mold and two hybrid aspherical lenses, offer excellent correction for distortion, as well as all types of aberration. This lens is equipped with an inner focusing system, and the models which are equipped with HSM system provide quiet, high speed autofocus shooting and also offer full time manual focusing. It has a minimum focusing distance of 24cm (9.4») at all focal lengths. The non-rotating lens barrel perfectly suits the petal shaped lens hood. A circular polarizing filter can also be used conveniently. - HyperSonic Motor. Enables virtually silent, highly responsive auto and manual focusing, as well as manual focus only override - Excellence. These professional type lenses feature the distinctive EX finish and EX logo on the lens barrel. - DC (DC Lens) - These are special lenses designed so that the image circle matches the smaller size of the image sensor of most digital SLR cameras. Their specialized design gives these lenses the ideal properties for digital cameras, the compact and lightweight construction is an added bonus ! including compact and lightweight construction. Covers a superwide angle of view 102.4-degrees to 63.8-degrees(SD format) Three pieces of Special Low Dispersion (SLD) elements and three aspherical lens elements produce top quality optical performance. Inner focusing system ensures the length of the lens remains unchanged whilst controlling aberrations. Equipped with HSM (Hyper Sonic Motor) system Minimum focusing distance of 9.4-in. (24cm) at all focal lengths. Relatively compact, lightweight for an ultra wide-angle zoom lens.
