<p><b>Note: The lens is NOT included; Only lens with 67MM lens thread size can use with these filters; Please verify that the size of your lens is ? 67MM </b> <p><b>Description :</b> <p>The included filters are made of HD optics glass that have good level of transmittance <p>Aluminum alloy frame sealing ring makes it have better tightness, which can avoid fall or loose <p><b>Neutral Density ND Filter :</b> <p>ND filters reduce the amount of light reaching the film without affecting the color (ND2 Filter reduces the exposure by 1-stop; ND4 reduces the exposure by 2-stop; ND8 reduces the exposure by 3-stops; ND16 Filter reduces the exposure by 4-stops) <p>ND filters allow you to have more control of the camera's aperture, exposure time and sensor sensitivity settings, which can produce a shallower depth of field, or achieve a sharper photo <p>ND Filters also help improve video quality by introducing a natural motion blur for smoother motion in video in bright daylight situations <p><b>Package Contents :</b> <p>1 x ND2 Filter <p>1 x ND4 Filter <p>1 x ND8 Filter <p>1 x ND16 Filter <p>1 x Lens Pen <p>1 x Filter Pouch