Master Bright Changing Light Our professional Variable ND64-1000 Filter Plus+ provides 6 to 10 f-stops of light reduction, giving you greater creative control in bright changing light. By blocking 6 to 10 f-stops, you can use wider apertures in bright variable light for shallower depth of field effects, and slower shutter speeds for long exposure effects without overexposing your images. Our 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. World's Best Glass Made with world leading German SCHOTT. 20-Layer Nano-Coating Quality protection, easier to clean. No Vignetting Made for wide-angle lenses. Quality Quality you can trust. Creative Control Master bright variable light Longer Motion Blur Cut 6 to 10 f-stops for stronger long exposure. Better Depth of Field Use wide apertures even in bright light. Professional German Glass Industry-leading German B270 SCHOTT optical glass is coated with a 20-layer nano-coating for truer light transmittance, better protection, and easier cleaning. Ultra-Slim Rim Our consciously designed ultra-slim rim avoids vignetting and our durable magnalium is guaranteed for life. Double-Threaded All our filters are double-threaded for stacking filters or using screw-mount lens caps.