Create cinematic motion blur in your shots with this 4-pack of premium HB-Series neutral density (ND) filters for HERO13 Black. Simply attach a filter and your camera automatically detects it and shifts into Auto Cinematic video mode so you can create motion blur with ease. Whether you're on the slopes or slicing through a berm, it's that easy to get the effect you want. Advanced users can manually configure the shutter speed and exposure settings to fine-tune a shot for the lighting conditions. Made from scratch-resistant, water-repellent, high optical quality glass, the filters are waterproof when installed and ready for any adventure.