Sigma 300-800mm f/5.6 EX DG HSM APO IF Ultra Telephoto Zoom Lens for Sigma SLR Cameras

Description

The Sigma 300-800mm f/5.6 EX DG HSM is an extreme telephoto zoom lens, and ideal for nature/outdoor or sports photography. This lens provides a relatively large constant f/5.6 maximum aperture at all focal lengths. The use of Apochromatic design and 2 ELD (Extraordinary Low Dispersion) glass elements give full correction of chromatic aberration and provide a high level of optical performance. The AF drive for the Canon EOS, Nikon and Sigma mounts are equipped with the silent, responsive and high speed Hyper Sonic Motor and provides fulltime manual focus override. The improved DG lens design corrects for various aberrations. This lens is specially coated to get the best color balance whilst cutting down on ghosting caused by reflections from the digital image sensor. The lens provides the utmost correction against lateral chromatic aberration, which is a serious problem for digital SLR cameras. It is also possible to use this lens with Sigma 1.4x EX and 2x EX Apo Tele Converters to convert this lens into an ultra tele-zoom lens, effectively converting it into a 420-1120mm f/8 or 600-1600mm f/11 lens. The lens materials used in this new lens are lead and arsenic free ecological glass. Hyper Sonic Motor provides smooth, silent AF with fulltime manual focus override The rotating tripod mount can be conveniently detached if required Apochromatic design and 2 ELD(Extraordinary Low Dispersion) glass elements give full correction of chromatic aberration and provide a high level of optical performanceThe Sigma APO 300-800mm f5.6 EX DG HSM Lens for Sigma Digital SLR Cameras provides a constant fast maximum aperture throughout the entire zoom range and is optimized for digital SLR cameras. By continuously varying the angle of view from 8.2 degrees to 3.1 degrees, the lens takes a lot of the footwork out of picture composition.

The multi-layer lens coating and lens design reduce flare and ghosting, which is a common problem with digital cameras, and it also creates an optimum color balance. Two Extra Low Dispersion (ELD) glass elements in the front lens elements reduce chromatic aberration to a minimum and also ensure sharp, quality images of high contrast. The lens Hyper Sonic Motor (HSM) provide silent, high-speed and precise auto-focusing with full time manual focus override. The lens also features a drop-in 46 millimeter filter holder in the rear part of the lens barrel, which can be rotated to facilitate the use of filters, including a polarizing filter. Since focusing and zooming do not change its overall length, this lens is easy to hold and use. In addition, since the front of the lens does not rotate, a circular polarizing filter can be easily attached and used. This lens accepts both 1.4x and 2x APO EX Tele-Converters (sold separately).