Sigma 10-20mm f/4-5.6 Lens for Nikon

Sigma 10mm - 20mm f/4-5.6 EX DC HSM Autofocus Zoom Lens for Olympus Four Thirds Mount Digital SLR Cameras - USA Warranty

Lens Hood, Front & Rear Lens Caps, 1 Year International Warranty plus 3 Year Sigma U.S.A. Extended Warranty (Total Warranty is 4 Years from Date of Purchase).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 Wide angle of view (102.4°at 10mm and 63.8°at 20mm) offers the photographer greater freedom of expression. These are special DC Seriesd 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 anadded bonus ! including compact and lightweight construction. 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 fulltime 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. Please note: Vignetting will occur if the lens is used with digital cameras with image sensors larger than APS-C size or 35mm SLR cameras.

Sigma Super Wide Angle Zoom 10-20mm f/4-5.6 EX DC HSM AF Lens for Olympus Zuiko

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. Features: It 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 24cm (9.4) at all focal lengths. Relatively compact, lightweight for an ultra wide-angle zoom lens. Lens Technology Explained: HSM (Hyper-Sonic Motor)This lens uses a motor driven by ultrasonic waves to provide a quiet, highspeed AF. EX (EX Lens)The exterior of this lens is EX-finished to denote the superior build and optical quality, and to enhance its appearance. DC for Digital (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...