Athena Focus Gear for Canon EF 8-15mm f/4L Fisheye USM Lens #specialoffers 1400 lumen Two Power Setting

1400 lumen Two Power Setting

Weight: 56g (2

Weight: 85g

Focus stick front cap

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Athena Focus Gear for Canon EF 8-15mm f/4L Fisheye USM Lens #specialoffers 1400 lumen Two Power SettingThis focus gear enables manual focus adjustment for the Canon EF 8 15mm f 4L Fisheye USM lens via the Athena Optical Dome Port OPD FZ200MF when used with Sea&Sea MDX series or Nauticam dSLR housings. The focus gear is useful in the following situations: * When you shoot fast moving subjects, like dolphins under limited ambient light (dark environment), so auto focus does not function effectively. * When you shoot half in half out photos and would like