Nauticam Focus Gear C1635f4-F for Canon EF 16-35mm f/4L IS USM - 19560Regular price $470.00
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 Canon EF 16-35mm f/4L IS USM lens.
The Nauticam Port Compatibility Charts also provide zoom and focus gear information.