A lens hood is an essential part of your Nikon system by reducing stray light and minimizing flare, your pictures show improved contrast and better color saturation. Hoods also provide important shock protection, should your lens be dropped or bumped. Genuine Nikon hoods are made of materials that prevent permanent bonding to the lens, which may sometimes occur with other manufacturers’ hoods. Snap-on: Snaps onto the front of the lens with a spring-type retainer ring. The mounting can easily be reversed for easy storage. Attachable Lens: 105mm f/2.8D AF Macro.