Features and benefits
 
Electronic

    •    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.
 

Optical/mechanical

    •    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.


Limitations

    •    No autofocus.
    •    Not compatible with Sony F3.

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