The EF 200-400mm f/4L IS USM Lens with Internal 1.4x Extender fromCanon is a high-performance super-telephoto zoom lens with a built-in 1.4x extender that converts the focal range and maximum aperture to 280-560mm f/5.6. The extender is located at the base of the lens and applied with a simple lever switch.
This Product Comes With 1 Year Limited WarrantyCanon EF 200-400mm f/4L IS USM Lens with Internal 1.4x Extender
E-145C Lens Cap for EF 300mm f/2.8L IS II USM
Lens Dust Cap E (Rear)
Lens Wide Strap B f/EF 300 / 400 mm f/2.8L IS II USM
ET-120 Lens Hood
Lens Case 200-400 for Canon EF 200-400mm f/4L IS USM Lens with Internal 1.4x Extender
52mm Drop-in Gelatin Filter Holder (Black)
Tripod Mount
Strap for Hard Case