Canon 100mm Macro EF USM Chart for our Focus Ring Specifications
Canon 100mm Macro EF USM Full Chart for its Gear, Focus, and Teleconverter Extension Rings
The Canon Macro 100mm Focus Ring Kit (T2) in conjunction with a gear (sold separately) makes up a complete Focus Gear for this lens. The parts are constructed of impact resistant ABS plastic. The Focus Ring is a two-part ring that is Gray and Red.