The Vivitar Series 1 is a teleconverter lens specifically built for Canon cameras. They increase your camera’s photographic potential to capture vibrant images of objects at a distance. This Vivitar 4-Element 2x Teleconverter doubles the focal length and retains the resolution and contrast of any fine optic. The Vivitar Series 1 is a multi-coated lens with an anti-reflection coating, ensuring that this teleconverter lens is protected from chromatic aberrations. With a 4 element construction, this Vivitar 4-Element 2x Teleconverter delivers superior quality images.