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

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