PRISM LENS FX FREEFORM CINE FX FILTER TRAY ADAPTER 77MM
The Adapter is the size of your traditional 4×5.65 Filter for matte-boxes and is placed in your matte box just like a filter would be. Now you can directly mount and screw our larger FX filters into the threadbare FreeForm Filter Adapter to mount our FX filters in your matte box.