Elevate your on-the-move compositions by controlling light intake and ensuring superior color reproduction with the SmallRig Variable ND and Circular Polarizer Filter for DJI Osmo Action 4. Combining a VND and CPL into one lightweight, compact form factor, this SmallRig filter provides precise exposure adjustment from three to five stops while eliminating reflections and glare. Constructed from aluminum and high-transparency optical glass, the filter features a multilayer coating on both sides that is resistant to water, mold, and oil.