Canon 70-200mm f2.8 L Lens is compatible with EF Extenders EF 1.4X and EF 2X, which extends the zoom range of the lens with AF to 98-280mm f/4 or 140-400mm f/5.6 respectively. Canon 70-200mm f2.8 L Lens allows use of ExtenderEF 1.4x II and 2x II.
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