Athena Focus Gear for Canon EF 8-15mm f/4L Fisheye USM Lens #specialoffers The subject side lens is

The subject side lens is compact diameter 32

Weight: 85g

[underwater with UWL-95S XD] 404 g/14

: Model name: IMEDION/Model code：MHRAAI4

* Measured time underwater (approx

Athena Focus Gear for Canon EF 8-15mm f/4L Fisheye USM Lens #specialoffers The subject side lens isThis 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