Metabones Speed Booster Ultra 0.71x Adapter for Canon FD/FL-Mount Lens to Micro Four Thirds-Mount MB-136

The Metabones Speed Booster Ultra 0.71x Adapter for Canon FD/FL-Mount Lens to Micro Four Thirds-Mount MB-136 is a professional optical device that allows you to use your full-frame Canon FD or FL lens on a Micro 4/3 camera body. The Speed Booster Ultra increases the maximum aperture of any compatible lens by one stop and also reduces the crop factor of cameras with sensors smaller than full frame.

The adapter has five glass elements in four groups and aluminum alloy and brass construction with chromium plating. The glass elements are ultra-high index tantalum pentagonal prism elements that reduce chromatic aberrations, while providing excellent color correction across all colors.

The Speed Booster Ultra features an integrated detachable Arca-Type tripod foot which can be used as a stand-alone tripod adapter. The attached foot allows you to balance your rig for smoother operation during handheld shooting, as well as give you greater flexibility when mounting your rig on other support systems.

Product Features in Detail

Sharper corners, less distortion, reduced vignetting
New optical design: advanced 5-element/4-group optical design incorporating ultra-high index tantalum-based optical glass to achieve extraordinary optical performance with improved corner sharpness, distortion and reduced vignetting.
Like the revolutionary original Metabones Speed Booster announced in January 2013, the Speed Booster ULTRA has a magnification of 0.71x, and so it effectively reduces the crop factor of mirrorless cameras with DX-sized sensors, such as Sony E-mount and Fuji X-mount cameras, from 1.5x to 1.07x. However, the new ULTRA design makes very effective use of exotic materials at the furthest limit of glassmaking technology, and as a result is well corrected for use with virtually all full-frame SLR lenses regardless of exit pupil distance. Thus, the Speed Booster ULTRA performs extremely well with professional-grade f/2.8 zoom lenses such as the 24-70mm f/2.8 and 70-200mm f/2.8 zooms by Canon and Nikon to produce 17-50mm f/2.0 and 50-142mm f/2.0 high-speed zooms, respectively. Similarly, high-speed fixed focal length lenses such as a 50mm f/1.2 will be transformed into a 35.5mm f/0.9 lens with excellent contrast and resolution from the center all the way to the edges of the image.