Canon EF 400mm f/4 DO IS USM Lens w/ Trunk Case Hood For sports and nature photographers Works in excellent condition and payment after full trial. Reason for selling: Switching to Sony Some light external marks as shown in the photos Photos are original of the same lens Glass is completely clean Comes with the original trunk case, lens hood, and original genuine leather case Canon DO lenses use diffractive optics (DO) to be significantly more compact and lighter than traditional EF lenses with similar focal lengths and apertures, while EF lenses are the standard for their mount and represent a wide variety of designs. The DO technology allows Canon to make telephoto lenses smaller, but they are typically a more specific, specialized product, whereas EF is the general category. Canon DO lenses use diffractive optics (DO) technology to be more compact and lighter than traditional EF lenses with similar focal lengths and apertures, while EF lenses are the standard for their mount and represent a wide variety of designs. DO technology allows Canon to make telephoto lenses smaller, but they are typically more specialized products, whereas EF is a general category. (Mobile number appears when pressing the contact button) WHATSAPP 00201222108294 Located in Riyadh, Al-Khazan Street For quick contact, WhatsApp 00201222108294