The Canon EF 400mm f/4 DO IS II USM is a super telephoto with Diffractive Optics technology with a compact, lightweight design that doesnt impact on chromatic and spherical aberration reduction. The gapless dual-layer diffractive optics produce a smaller, lighter 400 mm focal length which is ideal for sports and wildlife photographers. This high-performance telephoto lens is built with Optical Image Stabilizer technology to help minimise the effects of natural camera shake for sharper images at longer distances. Benefits Super-telephoto lens with high-performance optic technology suited to wildlife and sports photography Diffractive Optics produce images with a reduction in chromatic and spherical aberrations without impacting the compact and lightweight build of the lens at 2100 g The in-built Ultra-Sonic Motor (USM) drives fast and quiet Auto Focus with optional full manual override 9-bladed aperture diaphragm for beautiful bokeh from shallow depth of field Compatible with all Canon DSLR cameras and EOS-M mirrorless cameras with an EF-EOS M Mount adapter What\'s in the box EF 400mm f/4 DO IS II USM Lens Hood ET-120 Lens Case 400D Lens Cap E-145C Lens Dust Cap E Lens Wide Strap B Drop-in Gelatin Filter Holder 52 User Manual Good for Wildlife Action See all specifications