The Canon ES-73B is a dedicated lens hood designed specifically for the Canon RF 45mm f/1.2L USM lens. This bayonet-mount hood reduces lens flare and glare caused by stray light, resulting in improved contrast and color saturation in your images. It also provides physical protection for the front lens element during transport and handling. The ES-73B features a petal-shaped design that minimizes vignetting while maximizing light-blocking coverage. It attaches securely to the lens with a simple twist-lock mechanism and can be reversed for compact storage. An essential accessory for professional and enthusiast photographers using the Canon 45mm f/1.2 lens.