Blackmagic Design URSA Mini Pro EF Mount

Yes, the URSA Mini Pro EF Mount is specifically designed to allow the use of Canon EF-mount lenses with your URSA Mini Pro camera.

The shim kit is used to precisely adjust the flange back distance between the lens and the camera sensor. This is crucial for accurate focusing, especially at infinity and for shallow depth of field work.

Most basic functions like aperture control will work with compatible lenses. However, advanced features or specific autofocus modes of some EF lenses may not be fully supported by the camera through this mount.

This is a passive EF lens mount. It allows the mechanical and basic electronic connection but does not electronically control advanced lens functions beyond what the camera natively supports for EF lenses.

Installation involves removing the original mount, attaching the EF Mount, and critically, using the shim kit to set the correct flange back distance. Refer to the URSA Mini Pro service manual for detailed instructions.

This EF Mount is specifically designed for the URSA Mini Pro camera. Compatibility with other Blackmagic camera models is not guaranteed.

You can use lenses from any manufacturer that produces Canon EF-mount compatible lenses, such as Canon, Sigma, Zeiss, Tamron, and others.

The flange back distance is likely incorrect. Re-calibrate the mount using the provided shim kit, carefully following the camera's service manual instructions for flange distance adjustment.

Ensure the lens is fully seated in the mount. Some older or specialized EF lenses may have limited electronic communication. Check lens compatibility documentation if available. Clean the electrical contacts on both the lens and the mount.

Verify the correct flange distance. Ensure the lens itself is functioning correctly by testing it on another compatible body. Check for any internal damage or smudges on the lens elements.

Confirm that all mounting screws are tightened securely according to the camera's service manual. Ensure no foreign objects are obstructing the mounting mechanism.