This Adaptimax Canon EF to micro 4/3 Lens Adapter allows you to use all Canon EF lenses with external aperture rings on the Panasonic AG-AF100 Micro 4/3 video camcorder, as well as the Panasonic GH1/2 and Olympus E-P1. It will not work with other Canon lenses like the Canon FD series of lenses. The Adaptimax adapter is CNC milled from high-grade aluminum, then anodized. It is then fitted with a chrome-plated solid brass Canon EF mount. The rear of the adapter is made of hard-wearing stainless-steel for extra strength and durability. You will need a Canon EOS camera to set the aperture before shooting on the Panasonic AG-AF100. All Adaptimax adapters are hand finished to the highest specifications and come with a 12-month no-quibble guarantee. This item is manufactured in the UK.