Matches in DBpedia 2014 for { ?s ?p The Extender EF lenses are a group of teleconverter lenses made by Canon. These lenses are used between any compatible EF type lens and any of the Canon EOS line of cameras. When used with a compatible lens, they will multiply the focal length of the lens by a factor of either 1.4× or 2.0×, at the cost of decreasing the lens' aperture by 1 or 2 stops respectively.. }
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- Canon_Extender_EF comment "The Extender EF lenses are a group of teleconverter lenses made by Canon. These lenses are used between any compatible EF type lens and any of the Canon EOS line of cameras. When used with a compatible lens, they will multiply the focal length of the lens by a factor of either 1.4× or 2.0×, at the cost of decreasing the lens' aperture by 1 or 2 stops respectively.".