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Rent NowMetabones T Speed Booster Ultra 0.71x Adapter (Canon EF to Micro Four Thirds)
The Metabones T Speed Booster Ultra 0.71x is a high-performance optical adapter that allows you to mount full-frame Canon EF lenses onto Micro Four Thirds (MFT) cameras. More than just a physical bridge, this adapter utilizes advanced optics to condense the light from full-frame glass, effectively increasing the lens’s speed and widening the field of view to combat the MFT crop factor. It is an essential tool for filmmakers and photographers looking to maximize the potential of their Canon glass on MFT systems.
Optical Excellence and Light Gain
0.71x Focal Reduction: By condensing the light from a full-frame lens onto the smaller MFT sensor, this adapter reduces the effective crop factor, providing a wider, more “full-frame” field of view.
1-Stop Extra Brightness: The optical concentration provides a one-stop increase in light across the lens’s entire aperture range. For example, an f/2.8 lens effectively becomes an f/2.0 lens, significantly improving low-light performance.
Advanced Optical Design: Featuring five lens elements in four groups, the adapter is engineered to maintain high optical clarity, contrast, and color fidelity.
Anti-Reflective Interior: A specialized internal coating minimizes reflections and flare within the adapter barrel to preserve image quality.
Full Electronic Integration
Seamless Communication: The adapter supports full electronic communication, enabling autofocus, image stabilization (IS), and camera-controlled aperture for compatible lenses.
EXIF Data Support: Metadata from the lens is passed through to the camera body, ensuring focal length and aperture information are saved directly into your image files.
Panasonic Integration: When used with compatible Panasonic cameras, an integrated jog dial allows for incremental aperture adjustments, while a dedicated push-button provides instant access to the lens’s widest aperture setting.
Robust Professional Build
Premium Materials: Constructed from durable aluminum alloy with chrome-plated brass mounting rings on both the camera and lens sides to prevent wear-and-tear and ensure a secure, wobble-free fit.
Arca-Swiss Compatible Tripod Foot: Includes a detachable tripod foot with 1/4″-20 threads. The foot is natively compatible with Arca-Swiss and Markins ball heads, providing extra support for heavier telephoto lenses.
Secure Locking Mechanism: A professional locking system ensures the lens stays firmly attached, with a simple push-button release for quick lens changes.
Technical Specifications
Lens Mount: Canon EF (Full-Frame)
Camera Mount: Micro Four Thirds
Magnification: 0.71x
Aperture Increase: +1 Stop
Tripod Foot: Detachable, Arca-Swiss Compatible
Weight: Approx. 5.9 oz (167 g)
