The GND8 0.9 Soft Gradient Filter for Compact Camera Systems allows you to darken the sky in your landscape shots by three stops, while the rest of the photo is not affected. Soft gradient filters are mainly used on uneven horizontal lines such as mountains. Due to the irregular transition in nature between mountain tops and sky, this soft filter is ideal for such applications. You can set up the gradient filter in your holder to match the motif horizontally by moving the filter.