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Viltrox EF 1.4X EXTENDER is made of high-quality coated optical glass with optical designing ,which will increase the
focal length of all Canon EF lens to 1.4 times. Build-in memtal contact,auto focus,can reach the data transmission
between lens,teleconverter and camera.
EF 1.4X EXTENDER specifically use for 100mm or more fixed focal length lens, such as 300mm f / 2.8 lens, and
200- 500mm long lens perfect combination, can be used for fixed focus lens and a telephoto lens, but is not
recommended for use in less than 60mm of short-focus lens.