The T Smart Adaptor for Canon EF or Canon EF-S Mount Lens to Select Micro Four Thirds-Mount Cameras from Metabones allows a Canon EF or EF-S mount lens to be mounted onto a Micro Four Thirds-mount camera. While doing so, the adaptor is designed to support electronic communication between an attached camera and lens. If the lens includes autofocus, image stabilisation, as well as camera-controlled aperture functions, this adaptor is intended to allow those features to be used. If an attached lens is also capable of generating EXIF metadata when used with a directly compatible camera, the T Smart Adaptor is designed to allow that information to be saved along with image files generated with a combination of the lens, a Micro Four Thirds-mount camera, and the adaptor.

By enabling camera-controlled aperture functions for a Canon EF or Canon EF-S Mount Lens when used with a Micro Four Thirds-mount camera, program, shutter-priority, aperture-priority, as well as manual modes can be set and used through the camera. Power for these functions is transferred from the camera to the lens, and when manual focusing is preferred with a compatible electronic lens and a Panasonic camera, an integrated jog dial that allows incremental aperture adjustment can be depressed to open the lens's aperture diaphragm to its largest setting. The resulting shallow depth-of-field can then be used to help ensure focus accuracy.

When an image is taken with the T Smart Adaptor, a matte black internal coating minimises the potential for reflections within the adaptor barrel, which could otherwise result in unwanted glare within the image. The T Smart Adaptor is constructed from aluminium alloy for durability while minimising weight. Its mounting rings are made with brass to further prevent wear-and-tear, and a detachable tripod foot is included that features 3/8" threads as well as compatibility with Arca-Swiss tripod heads. While the T Smart Adaptor allows a Canon EF or EF-S mount lens to be mounted onto any Micro Four Thirds-mount camera, any functions that involve electronic communication currently require a Panasonic-brand Micro Four Thirds-mount camera.

• Allows a Canon EF or EF-S mount lens to be used with a Micro Four Thirds-mount camera
• Allows third-party, full-frame or APS-C EF-mount lenses to be used with a Micro Four Thirds-mount camera
• Supports electronic communication between camera and lens to enable autofocus, image stabilisation, on-camera aperture control, and EXIF metadata generation when possible
• Internal coating minimises reflections within the adaptor barrel
• Integrated jog dial for incremental aperture adjustment and push-button access to lens's widest aperture setting when used with a compatible Panasonic camera
• Detachable, Arca-Swiss compatible tripod foot with 3/8" threads
• Aluminium-alloy components for weight reduction Brass mounting rings further prevent wear-and-tear Locking mechanism for secure attachment of lens with push-button release