New ARRI EF Mount (LBUS) for large-format and Super 35 cameras


  • Use EF mount lenses with ALEXA Mini LF and ALEXA Mini
  • Wider light baffle covers large-format and Super 35 sensors
  • Extra LBUS connector frees up EXT connector on Mini LF and Mini

October 19, 2020; Munich – ARRI announces its new EF Mount (LBUS), allowing EF mount lenses to be used on ALEXA Mini LF and ALEXA Mini.

In order to extend the benefits of using EF mount lenses to large-format motion picture productions, ARRI has redesigned its EF mount with a wider light baffle and LBUS connector, allowing it to cover the large-format sensor of the ALEXA Mini LF, as well as the Super 35 sensors of the ALEXA Mini. The new EF Mount (LBUS) allows the ALEXA Mini LF and ALEXA Mini, to accept lenses with an EF mount and provides an LBUS connector. The previous ARRI Lens Mount will remain available for the AMIRA.

The use of cine-style EF mount lenses on motion picture cameras has been a popular way to make more affordable optics available to budget-conscious productions. Their mechanical design allows the use of external lens motors connected to the mount’s LBUS connector. Precise remote control is accomplished through ARRI ECS hand units like the wireless WCU‑4 and SXU-1 and the wired Operator Control Unit OCU‑1 and Master Grips.

Additionally, the new mount allows filmmakers to utilize the wide variety of still photo EF mount lenses for insert shots, including vintage lenses, extreme wide-angle lenses, fisheye lenses, tilt-shift lenses, extreme telephoto lenses, macro lenses, and other specialist EF mount lenses. The new mount allows setting of the lens’ internal iris motor and even powers the image stabilization built into some telephoto EF mount lenses.

Built to ARRI’s exceptionally high standards of durability and reliability, the EF Mount (LBUS) is suitable for hard-wearing use on professional film sets. Availability is planned for November 2020.

For more information on ARRI’s EF Mount (LBUS), please visit  https://www.arri.com/lens-mounts-and-adapters.

About ARRI:
“Inspiring images. Since 1917.” ARRI is a global company within the motion picture media industry, employing around 1,400 staff worldwide. Named after its founders August Arnold and Robert Richter, ARRI was established in Munich, Germany, where the headquarters is still located today. Other subsidiaries are in Europe, North and South America, Asia, and Australia.

The ARRI Group consists of the business units Camera Systems, Lighting, Media, and Rental, all dedicated to connecting art and future technologies for moving images. ARRI is a leading designer and manufacturer of camera and lighting systems for the film and broadcast industry, with a worldwide distribution and service network. It is also an integrated media service provider in the fields of film post- and coproduction, international sales, as well as equipment rental, and supplying camera, lighting, and grip packages to professional productions.  The Academy of Motion Picture Arts and Sciences has recognized ARRI’s engineers and their contributions to the industry with 19 Scientific and Technical Awards.

For locations and more information, please visit www.arri.com.