ALC-SH108 Lens Hood is essential when taking pictures where the camera is pointing towards a strong source of light (i.e. the sun, spot lights). Lens hoods protect lenses when stood on a surface, in the camera bag, or when changing lenses - also helps to keep fingers away from the front of the lens. Using a lens hood prevents contrast killing, flare inducing side light from hitting the front lens element. Pictures taken with a lens hood will generally have richer colors and deeper saturation. Lens hoods also provide extra protection for your valuable optics. ProMaster replacement lens hoods are super high quality with excellent fit and finish. What's in the box 1 x ALCHS108 Lens Hood