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Dust and moisture resistant, these extenders combine practicality and functionality with a new optical system that allows the user to extend the master lens focal length by 1.4x or 2x with no loss of lens performance or image quality. A new optical system offers improved compatibility with the Canon EF lens range, and there's enhanced anti-reflection processing inside the lens barrel, as well as a superior coating around the outer edges of the lens to reduce flare.
Both extenders are priced at 370.