NOTE: This Filter is compatible with all 58mm lenses. Please verify your camera's lens thread size (usually marked somewhere on the lens barrel or printed underneath the lens cap) before ordering. The number is always preceded by a "Φ" (diameter) symbol. Description: ND filters can reduce the amount of light entering the lens. This makes it easier to achieve effects such as a shallower depth of field or blurred motion. Decrease the depth of field by using wider apertures, which helps separate subjects from their background.
eBay