The T CINE Speed Booster ULTRA 0.71x Adapter for PL-Mount Lens to BMPCC 4K from Metabones allows a cine-style PL-mount lens to be mounted onto a Blackmagic Design Pocket Cinema Camera 4K MFT-mount camera. While doing so, the adapter's optics help to maximize the connected lens's apparent angle of view while providing a 1-stop increase for the camera over the lens's aperture range. This 0.71x adapter features Zeiss CP.2, CP.3, and CZ.2 lens support, and it also features a positive-lock mechanism for PL lenses.
If a lens intended for 35mm film or similarly sized full-frame camera sensors is connected to a camera with a Micro Four Thirds-sized sensor, it would project an image larger than the Micro Four Thirds sensor was built to accept. Able to capture only the center portion of the projected image, the effective angle of view of the lens would be narrowed, creating an in-camera "crop factor." The T CINE Speed Booster ULTRA 0.71x adapter condenses the light from a lens designed for 35mm film or "full-frame" camera sensors and projects it onto a Micro Four Thirds sensor. This allows the Blackmagic Pocket Cinema Camera 4K with a Micro Four Thirds sensor to utilize more of the light gathered by a connected lens, which effectively reduces the crop factor while making available to the sensor an additional one stop of light for each of the lens's f/stop settings.
This adapter is constructed from aluminum for durability while minimizing weight and its mounting rings are made with brass to further prevent wear and tear. The internal optics feature six lens elements in four groups, and they are designed to provide optical clarity as well as color fidelity. The detachable tripod foot is designed to match the height of the BMPCC 4K lens mount, and it features 1/4"-20 threads as well as compatibility with Arca-Swiss tripod heads.
