Canon ET-155 Lens Hood
for EF 400mm F2.8L IS Lens
ET-155 Lens Hood are primarily designed to prevent unwanted stray
light from entering the lens by extending and shading the end of the lens. In
addition, since the end of the lens is extended, you also get the added benefit
of some extra protection from accidental impact.
Canon ET155 Lens Hood are designed
to match the specific focal length of the lens it was designed for
For more information about, Canon ET-155 Lens Hood for EF 400mm F/2.8L IS Lens .