Large-Format EF Mount. Unlike the original ARRI EF Lens Mount that only provided coverage for smaller Super 35 sensors, the ARRI EF Lens Mount w/LBUS is designed with a wide, light baffle, allowing full frame and vista vision EF mount lenses to be used on large-format sensors without vignetting.

Made for the Minis. In a second significant departure from its predecessor, this mount is designed exclusively for ARRI ALEXA Mini LF and Alexa Mini cameras and is mechanically incompatible with non-mini ARRI camera systems.

Iris, IS & LBUS Support. This mount not only allows you to set iris and power image stabilization through the camera when paired with compatible EF mount still photo lenses, it also features an on-board LBUS connector for use with cforce-type lens motors (not included) for added functionality while shooting with cine-style lenses.