Canon EF Lens to Micro Four Thirds T Smart Adapter. The new MB_EF-m43-BT2 improves on the old MB_EF-m43-BM1 by lining the inner opening with a flocking material coating to reduce internal reflection.
Auto focus on Panasonic Mirco Four Thirds cameras
Can be powered either by camera body or by third-party external 5V power source (not included)
Iris/aperture controlled by the camera body.
Image stabilization (IS) lens support
Electronic manual focusing (e.g. EF 85/1.2L II and discontinued EF 50/1.0L)
EXIF (focal length, aperture, zoom range)
Distance and zoom display on camcorders (requires lenses supporting distance information)
Detachable tripod foot compatible with Arca Swiss, Markins and Photo Clam ball heads.
Flocking material coating inside the opening to reduce internal reflection.
Supports EF-S lenses
No video AF for Olympus
AFC (continuous AF) and AFF (flexible AF) modes are not supported
Panasonic video AF may hunt more than a native lens
No support for in-camera correction such as peripheral shading, CA and distortion