Urth 58mm Magnetic ND1000 10 Stop Nano Coating, B270 Optical Glass and Ultra Slim Lens Filter Plus+The Urth 58mm Magnetic ND1000 Lens Filter Plus+ easily snaps in place, providing a fixed 10 f stop light reduction for better control with long exposure and motion blur techniques in bright light. Creative Flow The Magnetic ND1000 Filter Plus+ brings ease to your creative flow with a convenient stackable, magnetic system. With less light entering your camera, you can also use wider apertures in bright light for a beautiful shallower depth of field