The Lee Reverse ND 0.9 (3 stop) 100x150mm is a neutral density filter with a smooth transition from dark to light from the middle of the filter upwards. It is particularly useful for seascapes when shooting bright horizons at sunrise or sunset, and is designed to give a more pleasing and natural balanced exposure to the sky. This filter is also available in 0.6 and 1.2 ND strengths.
