NiSi Filter IP-A for iPhone True Color V-ND 1-5 Stop

Provides an exposure reduction of 1 to 5 stops to capture real motion blur or lock in the best exposure time.The 0.3 to 1.5 density creates a darkening of the entire image, allowing wider apertures or slower shutter speeds than usually possible.The degree of density is easily controlled by rotating the front filter ring.By slowing your exposure time or increasing your aperture, you can control the depth of field and convey movement more easily.