The Canon EF 100-400mm f/4.5-5.6L IS USM Telephoto Zoom Lens is a L-series super telephoto zoom lens equipped with an Image Stabilizer. The fluorite and Super UD-glass elements largely eliminate secondary spectrum. The floating system also ensures high picture quality at all focal lengths. The Image Stabilizer has two modes and it is compatible with Extenders 1.4x II and 2x II.

Canon EF 100-400mm f/4.5-5.6L IS USM Telephoto Zoom Lens Specifications:

• Focal Length & Maximum Aperture: 100-400mm 1:4.5-5.6 
• Lens Construction: 17 elements in 14 groups 
• Diagonal Angle of View: 24° - 6° 10' 
• Focus Adjustment: Rear focusing system with USM 
• Closest Focusing Distance: 1.8m/ 5.9 ft. 
• Zoom System: Linear extension Type 
• Filter Size: 77mm Max. 
• Diameter x Length, Weigh: t3.6" x 7.4", 3.1 lbs. / 92mm x 189mm, 1,380g