A Telephoto picture coverage of 12°20′. Internal Focusing (IF) design for easy handling and smooth focusing down to one half life size(when the Nikor TC-200 or TC-300 teleconverter is attached, this lens becomes the equivalent of a 400mm f/8 lens which focuses continuously from infinity down to 1:1 without any decrease in effective aperture). Provides extra long close ups of dangerous or “shy” wildlife. 9 elements in 6 groups. Exceptional sharpness and flatness of field. Accepts standard Nikon 52mm filters, sold separately.