Canon EF 100mm f/2.8L Macro IS USM Focus Gear C100IS - Precision Macro Photography Gear for Jewelry, Product & Nature 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 Canon EF 100mm f/2.8L Macro IS USM lens.