- Viewfinder display of aperture, zoom and distance. (Distance display requires lens which supports distance information.)
- Auto exposure.
- Assignable function button.
- Supports image stabilization (IS) lenses.
- Power is supplied by camera body. No external power source is required.
- Adapter firmware is user-upgradable through the built-in micro USB port.
- Extra-large, geared iris ring.
- Secure breech-lock for locking the EF/EF-S mount lens solidly.
- Flocking material is coated inside the opening to reduce internal reflection.