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ARRI Ships EF Mount for Large-Format & Super 35 cameras

Dec 11, 2020

ARRI has announced its new EF Mount (LBUS), allowing EF mount lenses to be used on Alexa Mini LF, Alexa Mini and Amira cameras.

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. This allows it to cover the large-format sensor of the Alexa Mini LF, as well as the Super 35 sensors of the Alexa Mini and Amira. The new EF Mount (LBUS) allows the Alexa Mini LF, Alexa Mini, or Amira to accept lenses with an EF mount. On the Mini LF and Mini it also provides an LBUS connector, which is not supported on the Amira. 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 utilise 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 stabilisation built into some telephoto EF mount lenses.

https://www.arri.com/lens-mounts-and-adapters

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