The Viltrox EF-E II Booster Speed lens adapter mounts Canon EF full-frame lenses on Sony cameras with an E-mount. With 0.71x magnification, it concentrates the lens’s light onto the APS-C sensor, reducing the crop factor and adding one stop of light compared with the lens’s maximum aperture.
It supports electronic communication with compatible lenses, enabling autofocus, in-camera aperture control, and Exif data recording when these features are supported by the lens and camera. The side switch selects phase-detection or contrast-detection autofocus; select the mode before mounting the adapter on the camera. The detachable tripod foot has a 1/4″-20 thread, while the micro-USB port allows firmware updates.
- Type: Lens adapter with booster
- Lens compatibility: Canon EF full-frame
- Mount compatibility: Sony E-mount
- Magnification: 0.71x
- Light gain: 1 stop
- Optical construction: 4 elements in 4 groups
- Supported features: Autofocus, in-camera aperture control, and Exif data recording, when supported
- Autofocus selection: Phase detection or contrast detection
- Tripod foot: Detachable, with a 1/4″-20 thread
- Port: micro-USB
- Type
- Lens Adapter
- Compatibility
- Sony
Important information
Specifications are collected from official manufacturer websites. Please verify the specifications before proceeding with your final purchase. If you notice any problem you can report it here.