Prevent unwanted stray light from entering your Sigma 19mm f/2.8 EX DN lens with this dedicated Lens Hood from Sigma, which is manufactured to match the design and optics of your valuable glass. This hood features a ridged interior with a non-glare matte finish to further prevent or limit lens flare. Additionally, because the hood extends out from the front lens element, you get extra protection from accidental impact and the elements.