This product is equivalent to hoods that are included with lenses. It minimises lens flare and ghosting by keeping out extraneous light during still-picture and movie shooting. Protect your front element and reduce stray light from entering the FE 16-35mm f/2.8 GM Lens with this replacement Sony ALC-SH149 Lens Hood. Lens hood suitable for lenses Features a petal shape Practical bayonet design It has a total weight of 32 g.