The AF-4 Gelatin filter holder from Nikon is designed to attach to the front of a Nikon lens directly on or by the optional lens adapter and hold a 4" square filter in front of the lens element to achieve the desired effect, via the filter. The AF-4 will fit lens diameters ranging from 52-95 mm.
A 4 x 4 gelatin, resin, or glass filter up to 2 mm thick will fit into the holder. Once the filter is placed inside the filter slot and the holder has been rotated into position; simply turn the securing screw until the filter holder locks into place. To prevent the filter from falling out push the gelatin filter stopper to the side and it holds the filter securely.
Accommodates 4 x 4 Filters
Compatible with filters up to 2 mm thick
Rotates 360°