Putting a Canon lens on a Fujifilm camera isn't blasphemy – with this new adapter, it miraculously becomes a full stop brighter!

Fujifilm's X-series mirrorless cameras often boast compact designs due to their crop sensor, but this can limit the availability of ultra-wide lenses. To address this, Metabones has unveiled a new range of adapters that convert Canon EF-mount lenses to Fujifilm X-mount, offering improved brightness and image quality. The new lineup includes four adapters, with one designed to preserve autofocus and in-body image stabilization (IBIS) performance, and another that enhances the lens's wide-angle capabilities while adding an extra stop of light.

The Metabones T Speed Booster Ultra 0.71x II+ shrinks the usual APS-C crop factor from 1.5x to 1.07x, making lenses like Canon's 24-70mm f/2.8 behave like a 17-50mm f/2.0 on Fujifilm bodies. This adapter achieves this by utilizing five lens elements in four groups, enhancing sharpness and reducing vignetting. To support both autofocus and image stabilization, the adapters come equipped with a built-in processor and custom lens profile, which learns the characteristics of each mounted optic and stores this data for optimal performance.

While the adapters support phase-detection autofocus, the company claims their performance surpasses other adapted lens systems, though it may not match native lenses. The adapters are compatible with newer Fujifilm bodies, such as the X-H series and XPro2, and require lenses from a list of over 100 EF-mount options. Both the Speed Booster and Smart Adapter also have Cinema variants featuring a locking mechanism to maintain stability during focus or zoom.

Metabones plans to release firmware updates to further improve autofocus capabilities for users of the previous generation adapters. All three boosters are scheduled for release in September, with the Smart Adapter priced at $399 (approximately £295 / AU$555 / CA$554) and the Speed Booster at $699 (around £516 / AU$974 / CA$970).