Acting as both protection for your Sony A7 series camera (including the ever popular a7s, a7r, and new additions a7s Mark II and a7r Mark II) and as a platform for accessories, the Tilta ES-T17 has been specially designed and CNC machined from aluminum. It is compatible with any A7 series camera and with control functionality in mind. Features a built-in chip control device - can change signal cable to enable control of other cameras.