An excellant lens, i have used it over 5 years still going on without any problem, i never had to use any other lenses as much as this, a medium tele - when used on the Nikon D2xs, it renderd highest quality results specially on reproduction's of Old masters Art works, and for Antiquities.
Consistent Output; Durable; Easily Interchangeable; Fast / accurate auto-focus; Lightweight; Rugged; Strong Construction