The Threaded Filter Adapter for FilMov iPhone 16 Pro and Pro Max Cases from SmallRig is custom designed for FilMov iPhone 16 Pro and 16 Pro Max smartphone cases. It allows any 67mm threaded filter to be directly mounted to the case to achieve finer image control when shooting still or video content. It effectively prevents the vignetting caused by stacking filter adapters. Also, when paired with the threaded-to-magnetic adapter from the SmallRig filter kit, it enables universal compatibility with 67mm magnetic filters.