Wide Angle Wet Correctional Dome Port Lens Version II (67mm Round Adapter)
Wide Angle Correctional Dome Port lens
This is a wet accessory and it won't work on the surface.
The purpose of this accessory is to restore original angle of a lens. Most of underwater housings come with a flat port and when using the camera underwater with a flat port it loses around 28% of a view angle. By attaching this accessory to underwater housing - it restores the original view angle of a lens, just like on the surface.
Keep in mind that this accessory can only be attached to underwater housings that have 67mm thread at the port.
If underwater housing doesn't have 67mm thread on the port - it won't fit/work!