The Blackmagic Design URSA Cine Mount EF is a precision-engineered lens mount adapter designed to enable the use of Canon EF and EF-S mount lenses on URSA Mini Pro, URSA Broadcast G2, and other compatible URSA cameras. It serves as a robust interface, providing a secure mechanical and electronic connection that unlocks the extensive library of affordable, high-quality EF lenses for cinema and broadcast production. This mount is particularly valuable for cinematographers and videographers who already own EF glass or seek the versatility of lenses with autofocus, image stabilization, and electronic iris control.

Constructed from high-grade aluminum alloy, the mount features a secure locking mechanism that firmly attaches the lens, preventing rotation or accidental detachment during operation. Its precision machining ensures the exact flange focal distance for the EF mount (44.00mm), guaranteeing that lenses focus to infinity correctly. The integrated electronic contacts provide full communication between the camera and lens, supporting autofocus (in supported modes), electronic iris control (allowing aperture adjustment directly from the camera body or remotely), and the reading of lens metadata such as focal length and f-stop for recording into file metadata.

Designed for straightforward, tool-free installation, the URSA Cine Mount EF replaces the camera's native lens mount easily. It maintains full compatibility with the camera's internal systems, including the built-in ND filters. By offering a reliable, feature-complete EF mount solution, this adapter significantly expands the creative and practical lens options for URSA camera operators, making it an essential accessory for a wide range of productions from independent films to broadcast studio work.