The ikan EV2 adjustable DSLR baseplate has stacks of mounting options and can comfortably take a matte box and follow focus. Expect to pay $299 for the ikan EV2 adjustable baseplate.
The ikan EV2 Adjustable DSLR Baseplate offers full maneuverability forward and backwards and from side to side. Including an integrated tripod plate, 6” 15mm rods (2), mounting holes for the ikan Elements Quick Release Wedge and Elements Handle Arm honoring the modular nature of the entire Elements line.
See the guys over at ikan for more details.