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

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Sigma 300-800mm f/5.6 EX DG HSM APO IF Ultra Features

• Versatile Ultra Telephoto Zoom Lens

• Internal, High Speed Focusing

• Use Of ELD and APO Glass Elements

• Internal Zooming For Convenient Handling

• 2 year Extended UK warranty On official UK Imports

About Sigma 300-800mm F/5.6 EX DG HSM APO IF Ultra

Description Product Description The Sigma 300-800mm f/5.6 EX DG HSM lens covers a huge focal length range from 300mm to the ultra-telephoto focus length of 800mm. By continuously varying the angle of view from 8.2º to 3.1º, the lens takes a lot of the footwork out of picture composition. This lens is perfectly suited to wildlife and sports photographers where a powerful focal length is essential. Built to Sigma’s professional EX standards, this lens is designed to provide superior image and build quality. Two Extraordinary Low Dispersion glass elements reduce chromatic aberration to a minimum and ensure sharp, quality images from the centre to the edge of the frame. In order to attain the highest quality images, the APO lens has been incorporated using special low-dispersion (SLD) glass. The effect of which minimises colour aberration throughout the image. This digitally optimised ultra-telephoto lens is equipped with a Sigma’s Multi-Layer Coating technology that reduces both flare and ghosting. This also ensures an accurate colour balance and high contrast images. The internal focusing system ensures the overall length of the lens does not change during focusing, ensuring convenient handling and ease of use. The Hyper Sonic Motor (HSM) ensures an ultra-quiet, high-speed autofocus as well as full-time manual focusing capability, making it possible to manually focus without leaving AF mode. A 46mm filter can be inserted near the rear of the lens, and a circular polarising filter (included) can be used in situ. A heavy duty tripod bush is included as standard for use with tripods and monopods. Multiple threaded holes allow accurate balancing of lens and camera body. This is also designed as an easy grip when carrying the lens. Amazon.com The Sigma APO 300-800mm f5.6 EX DG HSM Lens for Canon 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).