The NiSi JetMag Pro Fs Nd16 (4 Stop) Filter offers 4 stops of light reduction, allowing for even longer exposures and enhanced creative possibilities in bright daylight. Perfect for smoothing water and creating motion blur in dynamic scenes, this filter maintains the natural color of your images with Full Spectrum ND technology. The JetMag Pro magnetic system enables fast, secure attachment and removal, helping you focus on getting the perfect shot.Thanks to the JetMag Pro magnetic system, this filter can be quickly installed or removed, allowing you to change or stack filters in seconds. The patented locking mechanism provides a secure, stable fit, ensuring your filters stay in place during shooting, even when using multiple filters simultaneously. Designed with an ultra-slim frame, it eliminates vignetting, even when used on wide-angle lenses as wide as 15mm.