More on Amazon.com : http://www.amazon.com/gp/product/B003Y374PY?tag=thefatkidin06-20

Fotodiox Lens Mount Adapter with Dandelion AF Focus Confirmation Chip Olympus OM Zuiko to Canon

Premium Grade Fotodiox Adapter
Adapter with built-in Focusing Confirmation Chip
Infinity Focus Guaranteed
Brass Construction
24 Month Manufacture Warranty