An optional B4 lens mount that lets you use broadcast lenses with Blackmagic URSA Cine 12K. B4 lenses are ideal for live production as they are electronically controlled and react quickly, with a center-crop mode allowing Ultra HD at high frame rates.
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The URSA Cine Mount B4 is an optional interchangeable lens mount that allows Blackmagic URSA Cine 12K cameras to use professional B4 broadcast lenses. The mount optics are specifically designed and matched to the URSA Cine's RGBW sensor, and a center-crop mode enables Ultra HD output at high frame rates ideal for live sports and broadcast production.
When used with the URSA Cine 12K LF 100G, the B4 mount enables live SMPTE-2110 output at frame rates up to 440 fps, making it perfectly suited for slow-motion replay in live sports broadcasts. B4 lenses are electronically controlled and react quickly, and are compatible with the optional URSA Cine B4 Adapter Cable for full iris, zoom, and focus control.