B+W 58mm Fog 2 (663-2) Effect Glass Filter

Pictures taken with the B&W Fog filter appear to have been taken in a fine, bright mist. A natural fog causes lights to glow and flare. Contrast is lower, and sharpness may be affected as well. In backlit situations, there is an even stronger effect. B&W Fog filters are available in grades of 1-3, with 3 having the greatest effect.