Metabones Canon EF - Canon RF T CINE Speed Booster Ultra (0.71x)

Professional Cinema Performance for Canon RF Mount

The Metabones Canon EF to Canon RF T CINE Speed Booster Ultra (0.71x) is a sophisticated optical adapter designed to bridge the gap between full-frame Canon EF lenses and RF-mount cameras. By utilizing a 5-element/4-group optical design, it reduces the crop factor of your camera by 0.71x while simultaneously increasing the maximum aperture by one full stop.

Advanced Optical Engineering

Designed by Caldwell Photographic, the Speed Booster Ultra features ultra-high index tantalum-based glass. This ensures exceptional sharpness and reduced distortion, making it ideal for high-resolution cinematography. The CINE version features a positive-lock EF mount, providing a rock-solid connection that eliminates play during focus pulls.

Seamless Electronic Integration

This adapter maintains full electronic communication between the lens and the camera body. It supports high-performance autofocus, electronic aperture control, and transmits complete EXIF metadata. The interior is flocked with felt material to reduce internal reflections and maintain maximum contrast.