Lens hood is one of the most important accessories for each lens you own. A lens hood provides multiple functions: it shades the lens from stray light, improving your contrast and image quality; in inclement weather, it can assist in keeping moisture or wind-blown debris off the lens; and it protects the front barrel from the inevitable impacts against walls, door frames, and other real-life obstacles. LH-AD06 replaces TAMRON AD06 Lens Hood. JJC LH-AD06 Lens hood is specific for TAMRON lens: Tamron AF 18-200mm F/3.5-6.3 Di II LD ASPHERICAL [IF] MACRO (Model A14) Tamron AF 28-200mm F/3.8-5.6 XR Di ASPHERICAL [IF] MACRO (Model A031)