XCSOURCE Ultra Silm Neutral Density ND1000 Filter 58mm For Digital Camera LF506 Neutral Density filter evenly reduce the amount of light passing thru the lens without effecting color. Ideal for reducing bright light in large aperture situations when a narrow depth is field is needed. Allows for slower shutter speeds when blurring or showing of movement is desired. Allows balancing of exposure to highlight a key subject. Lets you use higher speed films in bright light.