SN15 F Focus Gear for Sigma 15mm F2.8 EX DG Diagonal Fisheye Lens - Compatible with Follow Focus Systems, Perfect for Cinematic Videography & Professional Photography

Focus 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.