This lens hood is compatible with the 18-200mm f/3.5-6.3 II DC OS HSM, 24-70mm f/3.5-5.6 HF, 18-200mm f/3.5-6.3 DC, 28-200mm f/3.5-6.3 Compact Hyper Zoom, 18-125mm f/3.5-5.6 DC, 28-300mm f/3.5-6.3 Macro, 28-200mm f/3.5-5.6 DG Macro and 28-300mm f/3.5-6.3 DG Macro. It can be easily attached to the tip of the lens and when attached, it block out extraneous light and reduces flare and ghosting.