Canon 400mm 2.8 IS L

Canon EF 400mm f/2.8L IS USM Super Telephoto Lens with Lens Case and HoodSuper telephoto L-series lenswith an Image Stabilizer for use in track and field sports as well as low-light nature and wildlifephotography. The fluorite element and two UD-glass elements result in high resolution and high contrast. 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. This lens has the same AF stop and focus preset features as the EF300mm f/2.8L IS USM. Specifications:Focal Length & Maximum Aperture: 400mm 1:2.8 Lens Construction: 17 elements in 13 groups DiagonalAngle of View: 6º 10′ Focus Adjustment: Innerfocusing system with USM Closest Focusing Distance: 3m / 9.8 ft.; Filter Size: 52mm Drop-In Max. Diameter x Length, Weight: 6.4″ x 13.7″, 11.8lbs. / 163.0 x 349.0mm, 5,370g