B W 67mm ND Filter is a solid variable neutral density filter providing an exposure reduction of 1 to 5 stops. The 0.3 to 1.5 density creates a darkening of the entire image, allowing you to photograph with wider aperture or slower shutter speed than normally required. This gives you more control over depth of field and conveys movement more easily. The neutral color filter is continuously adjustable and makes no discrepancies
