Model Number: ET-60 Blocks stray light from entering the lens No vignetting would show with the hood on No vignetting will be caused with the hood on Extra protection from accidental impact Lens hoods are primarily designed to prevent unwanted stray light from entering the lens by extending and shading the end of the lens. In addition, since the end of the lens is extended, you also get the added benefit of some extra protection from accidental impact. Note : This ET 60 lens hood is compatible with following Canon lens models. CANON EF-S 55-250mm f/4-5.6 CANON EF 75-300mm f/4-5.6 USM CANON EF 75-300mm f/4-5.6 II CANON EF 75-300mm f/4-5.6 II USM CANON EF 75-300mm f/4-5.6 III USM CANON EF 75-300mm f/4-5.6 III CANON EF 90-300mm f/4.5-5.6 USM CANON EF 90-300mm f/4.5-5.6 Please confirm your lens model which can be seen infrom of your lens before ordering this product. Brand No Brand SKU 100964786_NP-1021506554