The filter is designed for use with a Cokin A Series Filter Holder. It can be used to add a tobacco tint to complement an existing sunrise or sunset within a scene, or to otherwise enhance a hazy or colorless sky. This filter has up to a 0.9 density and reduces light from entering a lens by up to three stops.
The filter is densest at the edge and tapers to clear by the middle, with a soft-edged line of transition between the dense and clear areas. A graduated filter with a soft-edged line of transition is able to filter the sky while minimizing its effect on the land.