Introducing NiSi's SMC UV series ultra-thin filters, the perfect addition to your photography arsenal. With a special technology of double-sided, multi-coating, these filters employ high-quality Japanese optical glass, which assures high transmittance and a highly smooth surface. Say goodbye to unnecessary reflections thanks to the proprietary NiSi Pro Nano Coating, which reduces unwanted reflections and provides a waterproof, dust-proof, and scratch-resistant layer for clear and high-quality images every time.The ultra-slim aluminum frame, with a thinness of only 5.2 mm, makes these filters the thinnest in the world so far. Additionally, superfine dull polishing and elaborate knurling ensure that the frame will not blanch because of repeated rotation. This ultra-thin filter frames help avoid vignetting on super wide-angle lenses.Designed to meet the needs of both amateur and professional photographers, these filters cut the UV light under 395NM, making them ideal for outdoor photography. The multi-layer anti-reflection coating ensures that your photos are of super high definition, with a transmittance of 98.9%.The screw thread in front of the frame makes it easy to install the lens cap and other accessories. Whether you're a professional photographer or just starting out, these ultraviolet filters will help you achieve clear and high-quality images every time. Don't let the size fool you; these slim filters pack a powerful punch when it comes to optimizing your camera's performance. Order yours today and take your photography skills to the next level!