Bring your photographic subjects closer with this Canon 400mm f/2.8L EF IS Super Telephoto Lens USM. This next-generation super telephoto L-series lens with an Image Stabilizer is one of the world's best lenses for wildlife and nature photography, as well as low-light and sports situations. The optical system is designed with a maximum aperture of f/2.8. One fluorite element and two UD-glass elements effectively correct aberrations resulting in sharp and excellent delineation. The ring USM and an improved AF drive algorithm make the AF speed the fastest in the world when used with the EOS-1v and EOS-3.
Diagonal Angle of View - 6 10' Focus Adjustment - Inner focusing system with USM Closest Focusing Distance - 9.8 ft./3m Filter Size - 52mm Drop-In Max. Diameter x Length - 6.4 in. x 13.7 in./163 x 349mm Weight - 11.8 lbs./5370g.