Metabones Canon EF to Canon EFR T Speed Booster ULTRA 0.71x Adapter (Black) with Tripod Foot (EOS R)

Metabones Canon EF to Canon EFR T Speed Booster ULTRA 0.71x Adapter (Black) with Tripod Foot (EOS R)

A 0.71× optical Speed Booster for supported Canon RF crop-mode workflows, giving compatible Canon EF lenses a wider effective field of view and approximately one stop more effective aperture.

The Speed Booster ULTRA condenses the image circle from a compatible Canon EF lens onto the smaller active sensor area used in supported crop modes. It also passes supported electronic lens functions, including autofocus and electronic aperture control, depending on the exact EOS R body, lens and firmware combination.

Key Features

• Canon EF lens to Canon RF camera conversion
• 0.71× focal reduction
• Approximately one-stop effective aperture increase
• Advanced 5-element / 4-group optical design
• Supported electronic autofocus and aperture functions
• Included tripod foot

Specifications

• Brand: Metabones
• Lens Mount: Canon EF
• Camera Mount: Canon RF
• Optical Factor: 0.71×
• Optical Design: 5 elements in 4 groups
• Electronic Communication: Supported on compatible combinations
• Tripod Support: Included

Materials & Construction

• Precision metal adapter housing
• Integrated focal-reducer optical group
• Electronic lens-contact system
• Dedicated tripod support for heavier EF lenses

What's Included

• 1 × Metabones Canon EF to Canon RF T Speed Booster ULTRA 0.71×
• 1 × tripod foot

Why Choose the Metabones EF to RF Speed Booster ULTRA 0.71×

• Reduces the crop seen in supported EOS R crop-mode workflows
• Recovers a wider effective field of view from compatible EF lenses
• Retains supported electronic lens control rather than becoming a manual-only adapter

Perfect For

• EOS R crop-mode video workflows
• Canon EF lens owners moving into RF-mount production
• Filmmakers wanting a wider effective view from existing EF glass

Compatibility

This Speed Booster is not intended for full-frame still photography or full-frame video modes. A compatible RF camera must be used in the appropriate crop mode. Autofocus and other electronic features vary by camera, lens and firmware, so confirm the exact combination before purchase.

Shipping Information

Please allow up to 4 to 12 BUSINESS days for delivery. For accurate shipping times, please check our shipping policy here.

Refunds & Returns

Returns are accepted within 30 days in line with our returns policy. Please check our returns policy before purchasing for full eligibility requirements.

Need help checking EOS R compatibility?

If you want to confirm the crop mode, Canon EF lens and RF body combination before ordering, please contact CameraHUB.