Canon EF Teleconverter 1.4X III Breakthrough combined with the maximum aperture

combined with the maximum aperture of F2 for silky bokeh also makes it suitable for portraiture

In addition

which makes it attractive

thanks to built-in VR II (Vibration Reduction) image stabilization

and cable management on the side

Canon EF Teleconverter 1.4X III Breakthrough combined with the maximum apertureExtending a lenses focal length by a factor of 1. 4x, Extender EF 1. 4X III incorporates phenomenal optical performance with minimal chromatic aberration and is a perfect complement to many of Canon super telephoto lenses. The Fluorine coating resists soiling, smears and fingerprints. Extender EF 1. 4X III maintains high standards not only optically, but also in terms of rugged, dustproof and water resistant construction.