Designed to fit the RF 600mm F11 IS STM lens, this ET-88B Lens Hood prevents flare and ghosting caused by stray light entering the lens. For use when shooting into bright light, this robust lens hood also helps to protect front element of the lens from accidental damage. Benefits Built to work with the pioneering RF 600mm F11 IS STM lens Maintain image quality by preventing flare and ghosting Protect the lenss front element from physical knocks and scrapes Stops rain from sticking to front element spoiling images Can be reversed and fitted to the lens to save space in storage Lightweight design for ease-of-use What\'s in the box ET-88B Lens Hood Compatibility RF 600mm F11 IS STM lens