K&F Concept 49mm ND Filter Variable ND Fader Neutral Density Adjustable ND Filter ND2 to ND400 Variable ND Filter  (49 mm)

This filter is compatible with 49mm lenses only. Not all cameras come with 49mm lenses. Please verify your camera's lens thread size. Your camera's lens thread size will be marked somewhere on the lens barrel or printed underneath your lens cap. - 49Mm adjustable variable neutral density filter (nd2 - nd400) reduces the amount of light reaching the film without affecting the color. Applies slow shutter speed under strong sunlight exposure. Allows wider apertures, effectively decreasing depth of field. Great for shots of dynamic screen, waterfalls, streams, waves.