Definitions for "Lens hood"
An optional, open-ended accessory that fits over the front of a camera lens to reduce the effect of strong light and glare on the final photographs.
Made from metal or plastic, the hood fits on the end of the lens to shade the front lens element from incidental light, which could otherwise cause reflections, glare and ghosting.
a necessary accessory to keep unwanted light from striking the lens and causing flare
a creep who hangs around dark alleys, mugging photographers passing by and taking their lenses
Keywords:  essential, part
an essential part of