This is a 3rd Party Lens Hood for Canon lens and it has the same function as EW-78D. Lens hoods 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. Compatible Canon Lens: EF 28-200mm f/3.5-5.6 and EF-S 18-200mm f/3.5-5.6 IS Lenses By Post: • $1.50 for regular mail; or • $4.00 for registered mail. Interested buyers, pls message me at 96644722. Thanks for viewing.