The Freewell M2 Magnetic Quick Swap Base Ring (77mm) is specifically crafted for use with their magnetic quick swapping system. When this base ring is secured to your lens's filter thread, it enables you to swiftly change out any M1 or M2 compatible magnetic filter, streamlining your creative process. You have the flexibility to replace single filters or layer different densities and filter effects to match your shooting requirements.
Compatibility
This base ring is exclusively designed for magnetic filters and will not work with traditional or nonmagnetic filters.