The Canon Extender RF 2x doubles the magnification of a compatible RF lens and is the perfect choice for enthusiast and professional photographers seeking more magnification. The Canon lens extender is ideal for press, nature and sports photographers looking for greater reach without the need to carry an extra lens.BenefitsThe Canon teleconverter features high-refraction, low-dispersion glass to control curvature of field and chromatic aberration of magnification for the highest image qualityAs well as optimised lens coatings, a 3-layer combined lens helps to reduce ghosting by reducing the surfaces in contact with the air as much as possibleThe exterior is coated in the same white heat shield coating as used on the RF 100-500mm F4.5-7.1L IS USM and RF 70-200mm F2.8L IS USM lens to prevent deterioration in performance in high temperaturesBuilt with a mechanism that prevents the lens elements from hitting those of the Canon 2x extenderThis Canon 2x extender is designed for reliability a