All [Jay] had to do was come up with a way to securely mount his Sony A7R3 on the ... route and 3D printed a beefy adapter plate with the standard VESA bolt pattern. His Smallrig camera cage ...

VESA is a standardized system of hole placements ... Adapters are extension arms or plates, like this Mount Plus 200x200 Universal Adapter Plate, that fit over the existing bracket and attach ...