Metabones T Speed Booster Ultra 0.71x Adapter
Specifications
Canon EF Lens to Micro 4/3 Body
Full-Frame Lens to Micro 4/3 Camera Body
Supports In-Camera Aperture Control
0.71x Micro 4/3 Crop Factor Compensation
The T Speed Booster Ultra 0.71x Adapter for Canon Full-Frame EF-Mount Lens for Micro Four Thirds-Mount Metabones Camera allows a full frame of the Canon EF-mount lens to be mounted on a Micro Four Thirds-mount camera. Meanwhile, the lens optics help maximize the apparent angle of the attached lens from view, providing a 1-stop increase for the camera over the aperture range of the lens.
If a lens intended for 35mm film or similar sized full-frame camera sensors is connected to a camera with a Micro Four Thirds sized sensor, it would project a larger image than the Micro Four Thirds sensor was built to accept. Able to capture only the central portion of the projected image, the effective viewing angle of the lens could be reduced, creating one in the camera "culture factor." The 0.71x Ultra T Speed Booster Adapter for EF-Mount Canon Full-Frame Lens for Micro Four Thirds-Mount Camera condenses light from a lens designed for 35mm film or "full frame" camera sensors and projects it to a Micro Four Thirds. This allows a Micro Four Thirds sensor to utilize more of the light collected by a connected lens, which effectively reduces the shear factor while providing the sensor an additional 1 light stop for each of the lens f / Stop settings .
This adapter is constructed from aluminum alloy for durability while minimizing weight and its mounting rings are made with brass to further prevent wear and tear. Inside are five lens elements in four groups that are designed to provide optical clarity as well as color fidelity, and a detachable tripod stand is included that features 3/8 "threads as well as compatibility with the tripod heads Ark -Swiss.
The T Speed Booster Ultra 0.71x Adapter for Canon Full-Frame EF-Mount Lens for Micro Four Thirds-Mount Camera supports electronic communication between a coupled camera and lens. Although the lens placed must be focused manually when using the adapter, aperture adjustments can be can be controlled from the camera. In addition, if a coupled lens is capable of generating EXIF metadata when used with a directly compatible camera, the 0.71x Ultra T Speed Booster Adapter for EF-Mount Canon Full-Frame Lens for Micro Four Thirds-Mount Camera is designed to allow the information to be saved together with the generated image files with a combination of the lens, a Micro Four Thirds-mount compatible camera, and the adapter.
Allows a Canon EF-mount full-frame lens to be used with a Micro Four Thirds-mount camera
Maximizes the apparent viewing angle of combined camera and lens
Provides a 1-stop increase for the camera over the aperture range of the lens
Jog dial integrated for aperture adjustment and push-button incremental access button for wider lens aperture setting when used with a compatible Panasonic camera
Five lens elements in four groups for optical clarity as well as color fidelity
Supports communication between camera and lens for camera aperture control, as well as the generation of EXIF metadata when possible
Internal lining minimizes reflections inside the adapter barrel
Detachable, Ark-Swiss foot tripod compatible with 3/8 "threads
Aluminum alloy components for weight reduction
Brass mounting rings prevent wear-and-tear
Locking mechanism for secure attachment of the lens with push button release.