The nikon 400mm f28 af s e fl ed vr lens is a professional fx format super telephoto prime lens ideal for sports and news photographers who demand top performance the lens boasts a professional grade dust and moisture construction a bright f28 maximum aperture a fast auto focus system af s and nikons new sport vibration reduction vr mode to deliver exceptional image quality speed and accuracy the newly designed optical construction incorporates 16 elements in 12 groups including tw