The dedicated
HB-36 Bayonet Lens Hood for Nikon 70-300mm VR Lens is specifically designed for use with the AF-S VR Zoom-Nikkor 70-300mm f/4.5-5.6G IF-ED lens.
Lens hoods are primarily designed to prevent unwanted stray light from entering the lens by extending and shading the end of the lens. You also get the added benefit of extra protection from accidental impact.
The "petal" shape of this lens hood maximizes the amount of hood coverage for the minimum amount of weight and hood area. This dedicated lens hood is designed to match the specific focal length of the lens it was designed for.
