The extender is perfect for photojournalists, nature and sports photographers who need to get close to distant and challenging subjects2.0x Magnification Factor / Microcomputer Controlled / Spectra Coating Reduces Ghosting Flare / Protective Fluorine Coating/ Dust and Water Resistant
Can be used with the following L series lenses
70-200, 100-400, 135,180,200,300,400,600,1200
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