Designed to fit the Canon RF 800mm F11 IS STM lens, the ET-101 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 the lens front element from accidental damage. Benefits Built to work with the pioneering EOS R system Maintain image quality by preventing flare and ghosting Protect the lens front element from knocks and scrapes Stops rain from sticking to front element 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-101 Lens Hood Compatibility RF 800mm F11 IS STM lens