The JJC LH-EW53 petal style bayonet Lens Hood is designed for Canon EF-M 15-45mm f/3.5-6.3 IS STM Lens & Canon RF-S 18-45mm F4.5-6.3 IS STM Lens. It is primarily used to prevent unwanted stray light from entering the lens by extending and shading the end of the lens.
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