The NanoPro Magnetic Clear Night Filter without Adapter Ring from Haida is designed to reduce light pollution in night photography; allowing you to capture the beauty of the nighttime sky. The resulting images will have true colors and improved contrast when compared to images influenced by light pollution. | The filter can improve the results of nighttime images by absorbing the yellow light from sodium-vapor lamps, a common light source within urban areas. By preventing the dominant wavelengths of light associated with the color of those lamps from being recorded, filter enhances visibility of astronomical objects. | This filter is constructed from optical glass for clarity and color fidelity. each glass surface includes multi-coating of anti-reflection coatings, The Nano coating associated provides an additional layer that results in an improved beading effect when the surface comes in contact with water or oil, allowing for more efficient cleaning. | Ultra slim an aluminum alloy ring ensures durability while allowing the filter to remain lightweight. A plastic case is included for storage and transport.This filter does not include a magnetic adapter ring, which must be purchased separately. | Please verify your camera's lens thread size before ordering. Your camera's lens thread size will be marked somewhere on the lens barrel or printed underneath your lens cap.If you have any questions about Haida products, you can contact us at any time