Introducing the Rear Accessory Mounting Plate for Canon C400 This Multifunctional Back Plate is a great option for mounting lightweight battery plates such as our Mini V-Mount Battery Plate as well as other accessories. Mounting points include 1/4″-20 and 3/8″-16 threads, both with locating points, as well as strap slots for securing accessories such as V-Mount batteries. This plate mounts directly to camera body and does not require a camera cage to use.