Metabones Speed Booster Canon EF to Blackmagic BMCC MFT

Canon EF to BMCC mount T SpeedBoosterTMadapters designed exclusively for the Blackmagic 2.5k Cinema Camera (BMCC). Note that the new Speed Boosters will only attach to Blackmagic cameras equipped with a Micro-43 mount. They cannot be attached to standard Micro 43 cameras. The new 0.64x Speed Booster reduces the full-frame crop factor of the BMCC from 2.39x to 1.53x, thus effectively transforming it into a Super-35 format cine camera. In addition, the speed of any attached lens is increased by113 stops, with a maximum output aperture of f0.80. Increase maximum aperture by113stop. (with a maximum output aperture of f0.80) Increase MTF. Makes lens 0.64x wider. Optics designed by Caldwell Photographic in the USA (patent granted). When using with "passive" (without electronic control pin) MFT camcorderscameras, such as BMCC 2.5K MFT and Digital Bolex D16 MFT, the Speed Booster must be powered by external power source via Micro-USB socket. Input Voltage is 5V DC. (Battery is NOT included in the box). When using with "active" (with electronic control pin) MFT camcordrscameras, such as BMPCC MFT, the Speed Booster can be powered by camera body. no external power source required. Build-in electonics to control lens aperture. The Lens aperture is set by the dial button on the adapter. High performance 32-bit processor and efficient switched-mode power supply. The tripod foot is detachable and compatible with Arca Swiss, Markins, Photo Clam ball heads. Flocking material coating inside the inner hole to reduce the internal reflection.