Sigma 500mm f4.5 EX DG HSM Lens - Canon Fit

This ultra-telephoto lens has a fast maximum aperture and also features a new super multi-layer coating, which enhances the traits of digital SLR cameras.

This is a versatile, fast aperture telephoto lens for both digital and film SLR cameras. Two ELD glass elements lower chromatic aberration to a minimum and it also makes sure of sharp, good quality images of high contrast.#

The internal focus system ensures the overall length of the lens does not change during focusing, ensuring convenient handling and easy usage.

A drop-in 46mm filter holder in the rear part of the lens barrel can be rotated easily to facilitate the use of filters, including a polarising filter.

By optionally adding an APO teleconverter, means that this lens can be used as a 420mm F4 AF ultra-telephoto lens with a 1.4X EX teleconverter, or a 600mm F5.6 AF ultra-telephoto lens with a 2X teleconverter.