Specifically designed for use with the Canon RF 14-35mm f4L IS USM Lens, the EW-83P Lens Hood has a petal shape design that maximises the amount of hood coverage for a minimum amount of weight and hood area. The lens hood is primarily designed to prevent unwanted stray light from entering the lens but extended the end of the lens. As well as this, the added length from the hood provides some extra protection for the front element from accidental impact.