Metabones T Speed Booster Ultra 0.71x Adapter for Canon Full-Frame EF-Mount Lens

This T Speed Booster Ultra 0.71x Adapter from Metabones allows a full-frame Canon EF-mount lens to be used on a Canon RF-mount camera. While providing a one-stop increase for the camera over the lens's aperture range, up to a maximum output aperture of f/0.9, the adapter's optics help to maximize the connected lens's apparent angle of view during UHD 4K video capture.   Key Features  Canon EF Lens to Canon RF Body Full-Frame Lens to RF Camera Body  For UHD 4K Video Capture  0.71x UHD 4K Crop Factor Compensation 1-Stop Increase in Lens Apertures Supports In-Camera Aperture Control Transfers Lens EXIF Metadata to Camera  Anti-Reflective Matte Black Interior  Removable, Arca-Type Tripod Foot  1/4"-20 Tripod Foot Accessory Threads   Replacement Value: $500