Freewell UV Filter only compatible with The Real Locking L1 VND/CPL

Reduces UV Light: Blocks harmful UV light, reducing haze and improving clarity, especially in bright conditions or at high altitudes with stronger UV exposure. Unique Locking Mechanism: The UV filter features an easy-to-use locking system. Simply press the tabs to securely lock it in place, preventing shifting or loosening during use. Protection: Use the UV filter alone for lens protection on base ring.