Extending a lenses distance by an element of one.4x, Extender EF one.4X III incorporates fantastic optical performance with lowest optical aberration and could be a excellent complement to several of Canon super exposure lenses. It options a inbuilt PC for seamless communication among camera body, lens and extender; options careful lens placement and coatings to attenuate ghosting and flare and even features a new atomic number 9 coating that keeps change of state, smears and fingerprints to a minimum. Associate in Nursing integral a part of several skilled systems, Extender EF one.4X III maintains high standards not solely optically, however additionally in terms of rugged, dustproof and water-resistant construction.