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- Canon FD 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
The Canon FD 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 FD 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.