Still looking for a Lens Hood for your digital camera? Canon EF 28-200mm f/3.5-5.6 USM EW-78D Lens Hods block side glare and augment the protection provided by filters to the lens surface and ring. The bayonet mount design makes it firmly on the lens. Not only because they are longer, but also because their shape is matched to the pyramidal cone and leaves no holes. In addition, sine the end of the lens is extended, you also get the added benefit of some extra protection from accidental impact. It shades the lens from stray light, improving your contrast and image quality.