Canon 100mm Macro EF USM Full Chart for its Gear, Focus, and Teleconverter Extension Rings
Sea & Sea Gear (T2) - Canon 100mm Macro EF USM in conjunction with a Canon Macro 100mm Focus Ring (sold separately) makes up a complete Focus Gear for the Canon 100mm Macro EF USM lens . It is designed to fit with approved Sea & Sea SLR housings for Canon cameras. If you wish to use tele-converters with your lens, all you need is to slip on either our 1.4x or 2x Tele Extension Rings (sold separately). The gear is constructed of impact resistant ABS plastic. Its color is Red.
Refer to Xit 404's Chart of Verified Housings to determine if your particular housing and lens combinations are supported. Xit 404 continues to add new lenses to its line of gears. If you do not see your lens/housing on the list contact us - it may be coming.