FotodioX Pro Auto Macro Extension Tube for Canon EF & EF-S Lenses (21mm) Kopul M2010 The omnidirectional polar pattern and

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FotodioX Pro Auto Macro Extension Tube for Canon EF & EF-S Lenses (21mm) Kopul M2010 The omnidirectional polar pattern andMaintains Automatic Lens Functions Can Be Stacked The 21mm Pro Auto Macro Extension Tube from Fotodiox is suitable for use with Canon EOS EF & EF S Lenses for extreme close up. It is an automatic tube that is able to communicate all electronic functions from the lens to camera including autofocus and auto exposure. No other optical components are added, so the image will preserve the original optical properties of the lens. The lens transforms into a