Wooden Camera Lens Support Adapter (FS7) is designed to attach to the Top Plate (FS7) and clamp onto the E-Mount to PL Mount Pro when attaching to Sony PXW-FS7 camera. This is perfect for previous customers who purchased the E-Mount to PL Mount Pro (A7s) and are upgrading to FS7. Loosen the support ring thumbscrew to quickly remove the mount and install another adapter. Wooden Camera are working on additional E-Mount to Canon, Nikon, etc. that will be available in the near future and will integrate with this same ring support.