Blackmagic URSA Cine Mount Shims

URSA Cine Mount Shims is a set of precision-cut shims and a dedicated baffle tool for fine-tuning the flange focal distance of an EF, PL, LPL or B4 mount on Blackmagic URSA Cine 12K cameras. Shims of varying thickness let a technician correct back-focus after a mount swap or a lens that reads slightly soft.

Proper shimming keeps lenses hitting true infinity focus and holding consistent sharpness across the focus range, which matters most on cinema glass shot wide open. Blackmagic part number BMD-CINEURSABMNTSHIMS.