The URSA Mini Pro B4 Mount from Blackmagic Design is a replacement mount for use on the URSA Mini Pro that enables using an ENG-style B4 mounted HD lens on the URSA Mini Pro. The mount incorporates corrective optics that enable the use of a lens designed to work on a camera with three sensors and a prism to work perfectly on the single-sensor URSA Mini Pro with zero optical degradation. That turns your URSA Mini Pro into an incredibly compact broadcast camera! URSA Mini Pro features a standard 12-pin Hirose lens control connection that's compatible with both B4 and PL lenses. You can remotely control record start/stop, iris and motorized zoom lenses! The lens mount features a locking lever to engage the mount's lock and the included shim kit enables precise flange distance adjustment when installing this mount on your camera.