This lens covers the telephoto range from 300mm to the ultra-telephoto range up to 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 digitally optimised lens covers the ultra-telephoto range up to 800mm & has a fast maximum aperture. Its new lens coating reduces flare & ghosting, a common problem with digital cameras & also creates an optimum colour balance. The lens incorporates two ELD (Extraordinary Low Dispersion) glass elements for effective compensation of chromatic aberrations & ensure sharp, quality images with high contrast. The addition of an HSM (Hyper Sonic Motor) makes fast, silent AF function a reality. The lens is also capable of full-time manual focus. Focusing & zooming do not change the lens' overall length, ensuring it's easy of use either handheld or on a tripod. A 46mm filter can be inserted near the rear of the lens, & the included circular polarizing filter can be used in situ. A heavy duty tripod bush is included as standard for use with tripods & monopods. Multiple threaded holes allow accurate balancing of lens & camera body. This is also designed as an easy grip when carrying the lens. 300-800mm f/5.6 EX DG HSM Lens Hood Circular Polarising Filter Fitted Padded Case Shoulder Strap Front & Rear Caps Instruction Manual 1 Year Warranty Card 2 Year Extended UK Warranty Card