Lens Hood ET-60 for canon

The ET-60 is compatible with Canon’s EF 75-300mm f/4-5.6 II and III USM lenses, as well as the EF 55-250mm IS lens. It’s designed to prevent unwanted stray light from entering the lens by extending and shading the end of the lens. In addition you  get the added benefit of some extra protection from accidental impact.