Urth Plus + ND16 The ND16 (4-stop) Lens Filter Plus+ from Urth provides a fixed 4 f-stop light reduction for better control with long exposure and depth of field techniques in low light. With less light entering your camera, you can also use wider apertures in low light for a beautiful shallower depth of field effect without overexposing images. Cinematographers can use the ND16 Filter Plus+ to create more cinematic effects in low light without losing quality or overexposing the shot. The Plus+ range features 20-layers of nano-coating providing easier cleaning and better protection against water, oil, and scratches. These layers also provide a higher maximum light transmission and a more consistent transmission curve for truer light reduction. Key Features: The fixed ND16 Filter Plus+ lets you capture motion blur and depth of field effects in low light. It is great for landscape photography and cinematic effects in videography. Reduce light to 6.25% to maintain you desired settings in overly bright conditions or create dramatic motion blur and shallow depth of field in low light conditions. The filter is double-threaded for stacking filters or using screw-mount lens caps. The B270 Schott optical glass is coated with a 20-layer nano-coating for truer light transmittance, better protection, and easier cleaning. The consciously designed ultra-slim rim avoids vignetting and our durable magnalium is guaranteed for life.