Featuring a unique optical design and paired with advanced image stabilization technologies, the Canon EF 400mm f/4 DO IS II USM Lens is a super telephoto lens designed for full-frame EOS DSLRs. Gapless dual-layer diffractive optics are employed within this lens' construction to produce a smaller, lighter weight 400mm option with enhanced correction for chromatic and spherical aberrations. Aspherical and UD elements are also utilised to further reduce distortions and optimised coatings contribute to increased clarity and contrast. Complementing the sophisticated optical layout, a four stop-effective Optical Image Stabilizer helps to minimise the appearance of camera shake and can be dedicated to different styles of shooting. Ideally positioned as a versatile option for sports and wildlife photographers, this lens' high-performance attributes and natural handling render this a viable telephoto option for a variety of applications. This lens is in good overall condition with some signs of use. The glass is clean and in good condition. The lens barrel shows some cosmetic marks. There is some light dust within the lens, which would not affect optical performance at all. The focus ring is in good condition. The lens mount shows signs of use. The tripod collar is in good overall condition with some cosmetic signs of use. The lens hood is in good overall condition with some cosmetic signs of use. The flight case is in good overall condition with some cosmetic signs of use.Does not include front lens cap.