CPL is a widely used filter that eliminates unnecessary reflection and improves the clarity and expressiveness of photos. Multilayer nanometer coating technology, with waterproof, oilproof, , scratchproof features. The filter can protect the lens from dust scratches, ensure the safety of your camera. Fit for DSLR cameras with 43/46/49mm interface, meet your different needs. Adopt high quality aluminum alloy+optical glass, firm and durable, provide longer service life.