Viewfinder Mounting Bracket VMB-3. Sturdy telescoping bracket that attaches the Electronic Viewfinder EVF-1 to all ALEXA cameras (Electronic Viewfinder Adapter EVA-1 additionally required for ALEXA Studio and ALEXA XT Studio). Uses standard 15 mm lightweight rods (at the proper distance from each other and from the optical center) for forward/backwards movement. Allows additional movement of viewfinder left/right, up/down, 360 degree rotation and placement on camera left or right side. Built-in bubble level. Provides one 3/8-16 UNC mounting point.