Product Highlights: ET-65 III Lens Hood for CANON EF 85mm f/1.8 USM EF 100-300mmf4.5-5.6 Design for Canon lens, same function as ET-65III. Lens hoods block side glare and augment the protectionprovided by filters to the lens surface and ring. The best designmakes it firmly on the lens. Lens Hood ET-65 III