Blackmagic Design Replacement Body Cap for Select Blackmagic Design Cameras with MFT Mount BMCASS/LENSCAPMFT Specification: For Use with Blackmagic Cinema Camera, Blackmagic Pocket Cinema Camera, and Blackmagic Studio Camera 4K or Blackmagic Studio Camera HD with MFT mount Dimensions Diameter: 2.25 (57.15 mm) Weight 0.6 oz (18.1 g)