Adjustable Neutral Density Fader filter ND2-400 Camera Lens Filter 49mm
Neutral density can be adjusted from 2 to 8 stops, easy to create different neutral density by rotating the ring.
The front diameter is larger than the back diameter of this filter , which is specially designed to avoid vignetting at wide angle lens.
Decrease the depth of field by using wider apertures, which helps separate subjects from their background.
Suitable for dynamic screen, waterfalls, waves or any fast moving subject.