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Black cylindrical lens adapter with silver mount rings and matte finish

Metabones

Metabones Canon EF to Fujifilm X T CINE Speed Booster ULTRA 0.71x camera accessory

SKU CH-Z4D6-5HCTR

A 0.71x adapter that reduces APS-C crop to 1.07x, turning Canon EF lenses into wider, brighter optics on Fujifilm X cameras

  • Sharper corners and less distortion with 5-element ultra-high index glass
  • Wider field of view on APS-C as crop factor drops from 1.5x to 1.07x
  • One extra stop of light turns f/2.8 zooms into f/2.0 equivalents
  • f/1.2 primes become f/0.9 for shallow depth and low light
  • Precision aluminium and brass mount ensures secure Canon EF to Fujifilm X connection

Canon EF to Fujifilm X Adapter

The Metabones Canon EF to Fujifilm X T CINE Speed Booster ULTRA 0.71x adapts Canon EF lenses to Fujifilm X-mount cameras. Its advanced 5-element optical design uses ultra-high index tantalum-based glass to reduce distortion and aberrations. The adapter retains sharpness across the frame while minimizing vignetting. It is built from precision-machined aluminum alloy and brass for a secure connection.

Shooters wanting wider field and faster aperture

Photographers and filmmakers using Canon EF glass on Fujifilm X bodies gain a 0.71x magnification factor that expands the field of view and delivers a brighter effective aperture. The design works with virtually all full-frame SLR lenses regardless of exit pupil distance. Users needing a simple mechanical mount without optical elements should consider a different adapter type.

0.71x magnification factor

The 0.71x magnification reduces the APS-C crop factor from 1.5x to 1.07x, significantly widening the angle of view. A 24-70mm f/2.8 zoom becomes 17-50mm f/2.0, and a 70-200mm f/2.8 becomes 50-142mm f/2.0. A 50mm f/1.2 prime converts to a 35.5mm f/.9 lens for exceptional low-light capability.

Highlights

  • Sharper corners and less distortion with 5-element ultra-high index glass
  • Wider field of view on APS-C as crop factor drops from 1.5x to 1.07x
  • One extra stop of light turns f/2.8 zooms into f/2.0 equivalents
  • f/1.2 primes become f/0.9 for shallow depth and low light
  • Precision aluminium and brass mount ensures secure Canon EF to Fujifilm X connection

Specifications

No published specifications for this item yet.

Questions about this item

Does the 0.71x magnification factor require a specific flange distance on my Fujifilm X camera?

The adapter is designed for Fujifilm X-mount bodies which share the standard short flange distance; no extra spacers or shims are needed for the 0.71x optics to achieve the 1.07x crop factor.

Which way do I attach the brass mount first — to the Canon EF lens or to the camera body?

Lock the brass Canon EF mount onto your lens first, then connect the combined unit to the Fujifilm X body; reversing the order can misalign the 5-element optical group and prevent the aperture lever from engaging.

How often should the 5-element tantalum glass group be professionally cleaned?

Clean only when visible dust affects images; use a rocket blower first, then a single drop of lens fluid on a microfiber cloth — never disassemble the 4-group barrel or the brass EF mount will lose its calibrated shimming.

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