We’ve put together this kit for both photographers and videographers who want to use 4 X 4 filters rather than screw on filters. It includes a Z-Pro filter holder which handles 4 X 4 and 4 X 6 filters up to 2mm thick and adapters to fit 67mm, 72mm, 77mm, 82mm, and 86mm lenses to mount the holder. (The lens must have filter threads.) Once mounted, the holder can be rotated and the filters adjusted to place splits, etc., exactly where you want them in the scene.