Your iPhone is already capable of capturing amazing photos and videos. With SANDMARC’s Motion Variable ND Filter, you can get more creative with it. It is designed to make controlling light on your iPhone camera easy. The Motion Variable ND Filter has an aluminum frame and multi-coated glass design.
The aluminum frame is laser-etched with precise markings that indicate ND levels. The Motion Filter system is compatible with anamorphic, wide, and telephoto lenses. You can use it with iPhone 11 Pro Max and older phones.[where to find it]