We ve shot with a lot of Variable ND filters. They were either too expensive or the quality wasn t there. None of them hit the sweet spot on affordability, functionality, and quality so we made our own. Available as a 2-5 stop or 6-9 stop, Moment Variable ND filters are the secret sauce to controlling your exposure. Made with premium Schott B270 Pro Cinema Glass, these filters are crisp edge to edge without color fringing or cross polarization.