Canon ET-155 W III Lens Hood OEM for EF 400mm f/2.8L IS I II III & RF 400 2.8
This hood is designed for the Canon EF 400mm f/2.8 IS III / RF 400mm f/2.8 lens. It also fits Canon EF 400mm f/2.8 IS I/II models perfectly, the only difference is a slightly whiter color.