ENHANCED IMAGE QUALITY - Seamlessly adapts to your M1 & M2 Magnetic Quick Swap Filters, ensuring optimal light transmission for crystal-clear images with every shot, preserving image quality. SUPERIOR DURABILITY - Crafted with high-grade materials, the Freewell M2 Empty Base Ring offers exceptional scratch resistance, protecting your valuable lenses from daily wear and tear for longevity. UNIVERSAL COMPATIBILITY - Available in 67mm, 77mm, and 82mm filter thread sizes, this adapter ring ensures a secure and precise fit for a wide range of lenses, enhancing its versatility. INCREASED LIGHT TRANSMISSION - Designed to maximize light entry, the base ring maintains the highest possible light transmission, reducing vignetting and preserving image clarity in various conditions.