The Moment team tested 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 Moment made thier 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. The filter rings are precision machined from aerospace-grade metal, delivering the durability you expect when shooting. Moment's Variable ND Filters also feature a unique flared geometry unlike anything else on the market, allowing you to see your ND number from behind the viewfinder. This provides fast, precise control over your shots in tricky lighting, without moving from behind the camera. The filters also feature hard stops at both ends of the range to prevent unwanted cross polarization for the cleanest image possible. German Schott B270 Pro Cinema Glass for superior optical clarityavailable in both 2-5 stop (ND4 - ND32) and 6-9 stop (ND64- ND512) rangesadvanced optical coatings for cinematic color and rugged durabilityprecision tuned to never cross polarizehard stops on both ends of the stop range for more precise controlworks with any standard center-pinch lens cap (like the one you already have for your camera lens)Works with the 67mm Filter Mount and 67mm Filter Adapter and M-series lensesworks with step-up/step-down rings, like this 62mm-67mm one herelaser etched markings allow you to see your stop from behind the viewfinderbody machined from aerospace grade metal to withstand use, drops, and adventureknurled grip texture for more control and easy removal from lensesconical geometry acts as a micro lens hood, cutting unwanted glare and reflectionsincludes a foam lined, metal carrying tin for protection on the go and a microfiber cleaning clothCovered by 2-year warranty