Zunedhys ND2-400 Neutral Density Fader Variable ND Filter Adjustable 49mm for Camera Lens

Simply rotate the ring of this filter, it offers 2 to 8 stops added density. Apply slow shutter speed under strong sunlight exposure. Rotating ring between ND2-400 giving great versatility in changing light. Reduces the amount of light without affecting colour balance. ND filters can eliminates overly bright & washed-out images. Enables slow shutter speeds to record movement in subjects such as waterfalls providing a silky effect to water. Slim . Thin filters are for avoiding vignetting when at angles.