Using a lens hood prevents light from hitting the front lens element from the sides, thereby reducing contrast and creating flare. Pictures taken with a lens hood will generally have richer colors and deeper saturation. Lens hoods also add additional protection for your lens. Fotobestway replacement lens hoods are high quality with sturdy fittings and materials. Compatible with the Canon EF 75-300mm f/4.0-5.6 IS Lens.