CANON EXTENDER EF 1.4X ii

This tele-extender can be used with fixed focal length lenses of 135mm and above (except for the 135mm ƒ/2.8 Softfocus lens) and the EF 70-200 ƒ/2.8L, 70-200 ƒ/2.8L IS, 70-200 ƒ/4.0L, and 100-400 ƒ/4.5-5.6L IS zoom lenses. Optically excellent, it preserves the image quality of the lens it is mounted on and multiplies its focal length by 1.4x.

The effective aperture is reduced by one f-stop; autofocus is possible on any EOS camera when combined with a lens that has a maximum aperture of ƒ/4 or faster. The new version II maintains the outstanding optics of the previous version and adds improved weather-resistant construction and enhanced anti-reflective surfaces on the body.