This digitally optimised lens covers the ultra-telephoto range up to 800mm and has a fast maximum aperture. Its new lens coating reduces flaring and ghosting, which is a common problem with digital cameras. The lens incorporates two ELD glass elements for effective compensation of chromatic aberrations and also ensures sharp, quality images.

Since focusing and zooming do not change its overall length, this lens offers ease of handling and operation. The HSM ensures a quiet, high-speed AF function as well as full-time manual focusing capability for Sigma, Canon, and Nikon mount lenses.

Using the Nikon D200 camera in combination with this lens can result in improper exposure. Please contact Sigma local shops for a free upgrade if the lens you bought was for a Nikon D200 camera. However, the Sigma 300-800mm APO f/5.6 EX DG lens functions properly with any other D-SLR camera.