The Canon EF Lens to FUJIFILM X-Mount Camera Speed Booster ULTRA from Metabones improves upon the original Metabones Speed Booster with a 5 element/4 group optical design that incorporates ultra-high refractive index tantalum-based glass for improved sharpness and reduced distortion and vignetting. The Speed Booster ULTRA allows a full frame Canon EF lens to be mounted to an APS-C format X-Mount camera and in doing so, increases the angle of view and increases the maximum aperture by approximately one f/stop.

• Canon EF Lens to FUJIFILM X-Mount
• Ultra-High Index Tantalum-Based Glass
• Increases Maximum Aperture by 1 f/Stop
• Increases Angle of View by 0.71x