RC815-F Focus Gear ~for Canon EF 8-15mm f/4L Fisheye USM Weapon lens and features an integrated

lens and features an integrated M67 thread in the front of the port for accessories

Hard plastic cap for M77 threaded Macro Ports

Changing lens mounts is as simple as removing four screws

Protective rear cap for Mini Port

It is a wet-mounted ultra wide lens (meaning it can be attached and removed underwater) designed to be used with a 60mm full frame equivalent macro lens that results in an ultra-wide 150º field of view

RC815-F Focus Gear ~for Canon EF 8-15mm f/4L Fisheye USM Weapon lens and features an integratedFocus gears allow access to the mechanical zoom function of many lenses. Use of these gears may require specific port extensions and may not be available for all housings and lenses. This focus gear is specific for the Canon EF 8 15mm f 4L Fisheye USM lens. Instruction Manual PDF Download