If you require a long telephoto zoom lens with a fast aperture but don't want to compromise on image quality, this Sigma lens is an excellent proposition. Its fast f2.8 aperture and ELD/ SLD glass mean clear, crisp and bright images ideally suited to wildlife, sports candid portraits and astrophotography.Optical PerformanceAs well as SLD (Special Low Dispersion) glass, this lens also uses ELD (Extraordinary Low Dispersion) glass elements to

COMING SOON - EST DEC 2010Super Telephoto f2.8, L Series lens with 4-stop Image Stabilisation, ideal for sports, wildlife and action photography.Durable and RuggedThe construction of this lens is designed to be both tough and lightweight, using magnesium and titanium alloys for the best combination of both.Four Stops ISThe Image Stabiliser is capable of increasing the working illumination of the lens by four stops. In addition t

The Canon 800mm, f5.6L IS lens uses improvements in materials and construction to give a lighter model than the Canon EF 600mm, f4L IS lens. This is achieved using a magnesium alloy construction. Optically, it has two fluorite elements, one UD element, and one Super-UD-glass element for the best possible correction of aberrations and sharpest, contrasty images. For use in difficult weather conditions, it has weather resistant gaskets. Finally the

This is the longest telephoto lens among Canon's lineup, and a terrific choice for long-distance application-outdoor sports, wildlife, news photojournalism, and so on. It's actually lighter than Canon's EF 600mm f/4L IS lens, weighing just under 10 lbs. It uses a refined optical design, with two fluorite lens elements, one UD element, and one Super-UD-glass element, for outstanding correction of colour fringing and superb contrast and sharpness. This super-telephoto lens uses magnesium-alloy barrel construction to enhance its light weight, and has weather-resistant gaskets throughout for use in harsh conditions. It's compatible with both the EF 1.4x II and 2x II tele extenders for even more reach: EOS cameras with 45 AF points will continue to provide autofocus at the centre AF point when the lens is used with the 1.4x extender. Finally, it's image stabilised, providing up to 4 stops of correction for camera shake.This makes it even more practical in many situations.

From 300mm telephoto to 800mm ultra-telephoto this lens provides a constant fast maximum aperture and is optimized for digital SLR camerasThis lens covers the telephoto range from 300mm to the ultra-telephoto range up to 800mm. By continuously varying the angle of view from 8.2° to 3.1°, the lens takes a lot of the footwork out of picture composition.Lens coating reduces Ghost and FlareThe multi-layer lens coating and lens design re

COMING SOON - EST DEC 2010This high performance L Series lens is made from light and tough alloys and has four stops of image stabilisation with three modes for different applications.Lightweight and High PerformanceThe EF 300mm f2.8L lens is constructed with magnesium and titanium alloy components for a great mixture of strength and lightness.Fast Action ShootingIn addition to the fast f2.8 maximum aperture, this lens has four

This lens can be used for track and field sports, racing sports, and even nature photos. The fluorite element and two UD-glass elements make the delineation the best among EF lenses. Images are surprisingly sharp and clear even at maximum aperture. Compatible with Extender EF 1.4x and 2x.With IS (Image Stabiliser) this ensures a steady shot every time.

Super telephoto L-series lens with an Image Stabilizer for use in track and field sports as well as low-light nature and wildlife photography.The EF 400mm f/2.8 L IS USM is a new generation super telephoto 400mm lens with a large aperture ratio of f/2.8 and first rate imaging performance. With image stabilization effective over two shutter speeds this lens stands out. You can have reliable capabilities when used for fashion photog

Canon's breakthrough multi-layer diffractive optical lens technology provides photographers with superior super-telephoto performance in a smaller and lighter design with enhanced correction for chromatic aberrations. Canon have also added an Image Stabilization system that gives the equivalent effect of a shutter speed two stops faster. Also features fast AF, full-time mechanical focus and dust and water-resistant construction. Diffractive

Focal Length: 800mmMinimum Aperture: f/32Lens Construction: 12 Elements in 9 GroupsAngle of View 3.1°Number of Diaphragm Blades: 9Minimum Focusing Distance: 700cmMaximum Magnification: 1:8.8Filter Size: 46mm (rear)Lens Hood: Bayonet type hoodDimensions: Diameter 156.5mm x Length 521mmWeight approx: 4900g

This 500mm super telephoto lens features an Image Stabiliser system and a large maximum aperture of f/4. Its optical system consists of 17 elements in 13 groups, including one fluorite and two UD lensesWith secondary spectrum completely eliminated, it provides sharp, high contrast imaging performance. Ring USM drive and inner focusing help ensure that autofocusing speed is at the highest level in the world*. Adding further to its appeal are full-

This lens covers the ultra-telephoto range up to 800 mm. By continuously varying the angle of view from 8.2° to 3.1°, the lens takes a lot of the footwork out of picture composition. This digitally optimised lens covers the ultra-telephoto range up to 800mm and has a fast maximum aperture. Its new lens coating reduces flare and ghost, which is a common problem with digital cameras. It incorporates two ELD (Extraordinary Low Dispersion) glass elements for effective compensation of chromatic aberrations and also ensure sharp, quality images. Addition of an HSM (Hyper Sonic Motor) makes fast, silent AF function a reality. The lens is also capable of full-time manual focus. Since zooming does not change the lens overall length, the lens is easy to hold and use. And by adding a DG Teleconverter, which is sold separately, you can use this lens as a 420-1120 mm F8 MF ultra-telephoto zoom lens with a 1.4x EX Teleconverter, or as a 600-1600 mm F11 MF ultra-telephoto zoom lens with a 2x EX Teleconverter