Improve your photographic results and protect your camera lens with this Lens Hood from Monoprice! A lens hood serves several purposes. Most obviously it prevents side lighting from hitting the lens and causing glare or exposure problems. Less obvious is physical protection. When outdoors in windy and/or rainy conditions, the lens hood can help prevent moisture or airborne debris from coming into contact with the lens. Additionally, in the event the lens is dropped or bumped into a wall, the inexpensive lens hood will take damage instead of your expensive lens. This lens hood is designed to screw onto the standard 77mm filter thread on the front of a lens. The hood is cylindrically shaped and extends about 3/4". The inside of the hood is sized and knurled so that the Monoprice 77mm Center Punch Lens Cap will fit down inside the hood and firmly grip the sides to stay in place. 30-day easy returns. No restocking fee. Free lifetime technical support. 1 year warranty.