JJC LH-AD06 Lens Hood For Tamron AF 18-200mm F/3.5-6.3 Di II LD ASPHERICAL [IF] MACRO (Model A14) & 28-200mm F/3.8-5.6 XR Di ASPHERICAL [IF] MACRO (Model A031) As Tamron AD06 It shades the lens from stray light, improving your contrast and image quality Assist in keeping moisture or wind-blown debris off the lens Protects the front barrel from the inevitable impacts against walls, door frames, and other real-life obstacles