This lens hood is designed to prevent flare and ghosting caused by stray light entering the lens and to help maximise image contrast. Furthermore, this will also help protect your lens from small bumps and scrapes. This is an essential accessory to safeguard image quality. Benefits Specially designed for the Canon RF 100mm F2.8L Macro IS USM Lens Safeguards against stray light Helps protect the front element of the lens from knocks, scratches and weather Can be reversed and fitted to the lens to save space in storage High quality design and construction What\'s in the box Canon ET-73C Lens Hood Compatibility RF 100mm F2.8L MACRO IS USM