Description
This tele extender can be used with fixed focal length lenses 135mm and longer (except the 135mm f/2.8 Softfocus lens) and the EF 70-200 f/2.8L 70-200 f/2.8L IS 70-200 f/4.0L and 100-400 f/4.5-5.6L IS zoom lenses. Superb optically it preserves the image quality of the lens it 's mounted to and multiplies its focal length 1.4x. Effective aperture is reduced by one f-stop; autofocus is possible on any EOS camera when combined with a lens having an f/4 or faster maximum aperture. The version II maintains the outstanding optics of the previous version and adds enhanced weather- resistant construction and improved anti-reflective surfaces in the barrel.
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