Yes, the universal camera plate supports most DSLR and Mirrorless cameras via standard 1/4"-20 or 3/8"-16 mounting screws.
Absolutely. It uses industry-standard 15mm rods, making it fully compatible with all standard follow focus units and matte boxes.
Yes, the shoulder pad can be slid along the rods to help you find the perfect center of gravity for your specific camera and lens combination.