Prevent stray light from entering a lens, keeping unwanted glare from affecting your photos. Make that unwanted glare staining your winning stills and stories a thing of the past with an ET-83D lens hood that fits comfortably on the EF 100-400mm F4.5-5.6L IS II USM lens. The ET-83D lens hood uses a circular polarizing filter to keep your work glare-free. Push aside your worries on your outdoor shoots or action-packed wildlife tours, arm your lens with an ET-83D lens hood.