Just take note. EW hoods are petal hoods and ET hoods are round hoods. The W stands for wide angle/UWA (focal length < 50mm) and T stands for telephoto (focal length > 50mm). Check online which hood better suits your lens type. Like when I first bought my 100mm macro, i told the retailer i am looking for petal hood, and they recommended me round hoods for the above reason. does your hood state whether it is EW or ET?