A professional L-series 200-400mm f/4 lens with a built-in 1.4x extender that boosts focal lengths to 280-560mm, perfect for photojournalism, wildlife and sports. A high-performance super-telephoto zoom, the four-stop Image Stabilizer maximises sharpness with instinctive controls for enhanced handing. The use of magnesium alloy adds strength and durability without increasing the weight and the 1.4x extender is located at the base of the lens, applied with a simple lever switch. Part of the Canon professional L-series flagship range, its designed for robust handling and resistant to dust and moisture Benefits A professional zoom with a constant f/4 maximum aperture suitable for wildlife, sports and photojournalism A built-in extender increases focal length by a factor of 1.4x to 280-560 mm. Part of the Canon professional L-series flagship range, its designed for robust handling and resistant to dust and moisture Super-spectra lens coatings minimize ghosting and flare and a fluorine coating on the front and rear lens elements Compatible with all Canon DSLR cameras and EOS-M mirrorless cameras with an EF-EOS M Mount adapter What\'s in the box EF 200-400mm f/4L IS USM 1.4x Extender Lens Drop-in Gelatin Filter Holder 52 Lens Cap E-145C Lens Dust Cap E Lens Wide Strap B Monopod Mount Lens Hood ET-120 Lens Case 200-400 User Manual Good for Wildlife Action See all specifications