SN15-F Focus Gear ~for Sigma 15mm F2.8 EX DG Diagonal Fisheye 6S The internal port opening of

The internal port opening of this port is enlarged for larger diameter lenses like Canon EF 11-24mm f/4 USM

This dual flip holder allows for use of two M67 wet-mate optics like the SMC-1 or CMC-1 on M67 Macro Ports

Optional T-groove plates and 1 inch ball adapters are custom designed to fit these handles

This zoom gear is for the Canon EF 24-105mm f4L IS USM lens

SN15-F Focus Gear ~for Sigma 15mm F2.8 EX DG Diagonal Fisheye 6S The internal port opening ofFocus 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 Sigma 15mm F2. 8 EX DG Diagonal Fisheye lens.