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Metabones Canon EF to Canon RF Speed Booster T Ultra

Gear Arrives On
Ships Back On
Total
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?
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?
Days
4

4 Day Rental Price:

$58.00

Shipping
Included*

*up to 2nd day air - overnight available

The Metabones Canon EF to Canon RF Speed Booster T Ultra allows you to mount any full-frame Canon EF-mount lens to the RF-mount Canon EOS R and EOS RP cameras. Key features include:

  • Canon EF lens to Canon RF body

  • Wider focal length and increased aperture

  • Electronic communication with the camera

  • Sturdy design with built-in tripod foot

Lens Compatibility. The Metabones Canon EF to Canon RF Speed Booster T Ultra allows full-frame Canon EF and third-party EF-mount lenses to be used on the RF-mount Canon EOS R and EOS RP cameras.

Camera Compatibility. This adapter offers limited autofocus, image stabilization, and aperture control with the RF-mount Canon EOS R and EOS RP cameras and Canon EF-mount lenses. For more information, you can check the manufacturer’s compatibility list here.

Wider Focal Length and Increased Aperture. This version of the Speed Booster widens the mounted lens’s focal length by 0.71x, reducing the Canon EOS R’s UHD 4K video capture crop factor from 1.75x to 1.42x and reducing the Canon EOS RP’s UHD 4K video capture crop factor from 1.63x to 1.15×. It also increases the mounted lens’s maximum aperture by 1 stop. This Speed Booster wasn’t designed for still capture, but it’ll work with a compatible camera set to APS-C mode. You can’t use this Speed Booster to capture 60p FHD video.

Electronic Communication. The adapter’s mount has electric contacts that allow you to use compatible lenses’ autofocus, aperture-control, and image-stabilization functions. For most lenses, the adapter doesn’t require a separate power source, and EXIF data is transferred and embedded into your footage.

Sturdy Design with Built-In Tripod Foot. The aluminum-alloy barrel and brass mounts give it a solid feel, with an Arca-Swiss compatible tripod foot that lets you mount the adapter itself directly to a tripod. This ensures the lens’s weight doesn’t put additional stress on the camera’s mount.

Q & A

  • Does this adapter allow slam infinity focus?
    • This adapter doesn’t allow slam infinity focus. Every lens will be slightly different, and they’re designed to be this way. If you do any infinity-focus adjustment to this adapter, we’ll charge you.

  • Is this adapter compatible with Canon EF-S mount lenses?
    • This adapter isn’t compatible with Canon EF-S mount lenses.

  • Autofocus

    Unknown

    Brand

    Metabones

    Compatibility

    Full Frame

    Diameter

    2.8"

    Focal Length

    Unknown

    Groups/Elements

    4/5

    Hood Included

    No

    Image Stabilization

    Unknown

    Item Type

    Lens

    Length

    0.8"

    Lens Mount

    Canon EF

    Lens Type

    Adapter

    Magnification

    0.71x

    Mfr. Model Number

    MBSPEF-EFR-BT1

    Mount

    Canon RF

    Tripod Mount

    1/4"-20 Female

    Weight

    0.5 lb.

    Adapter - Metabones Speed Booster T Ultra Canon EF to RF

    Canon EF Body Cap

    Canon RF Rear Lens Cap