Recommended for: SLR or Full Frame or APS-C D-SLR cameras with wide-angle lens. Filter holder to lenses with a 72/77/82/86/95mm filter thread The filter holder can hold up to 3 Z-PRO Series filter at the same time. Z-Pro Series system is compact and very easy to carry thanks to its lightweight. Even with several filters mounted at the same time, it doesn't strain the motor of autofocus lenses. The filter holder can hold up to 3 Z-PRO Series filter at the same time Usage of Zomei Camera Holder and Ring: 1. Screw the ring adapter onto your lens 2. Slide the filter holder on the ring adapter until it snap in place 3. Slide the filter into one of the filter holder slots What's In The Box? Zomei filter holder *1 adapter ring *1（Please write the size you need）.