Kenko Tokina's optical technology, the "Floating Frame System," is employed. By minimizing stress on the glass, an unprecedented level of planarity is achieved. Nothing is added to the image quality; the depiction is as it is. In other words, it's a filter like air that captures light as it is – that's the ZX [Zecross]. Newly Developed "Floating Frame System" Conventional frames apply stress to the glass due to the ring that secures the glass, which impairs the planarity of the glass. The ZX [Zecross] Protector adopts the newly developed "Floating Frame System." Through a special elastic cushioning material, the stress on the filter glass is reduced to nearly zero, fully drawing out the original descriptive power of the lens. ZR Coating for Ultra-Low Reflection ZR Coating is an anti-reflection coating that reduces the reflection rate on the glass surface to 0.3% or less on one side in the visible light range. The impact on image quality due to filter attachment is minimized. It supports a wide range of lenses, from the latest high-performance, high-image-quality lenses to old lenses that you want to enjoy the depiction of. Durable Water and Oil Repellent Coating A highly durable water and oil repellent coating is applied to the final coating layer of the glass. It strongly repels water and oil, and even if dirt such as fingerprints adheres, it can be easily wiped off. You can shoot without stress even when shooting near water or in rainy weather, making daily maintenance easier. V-shaped Anti-Reflection Edge The inner diameter of the metal frame is V-shaped, reducing flat surfaces to prevent reflections. High-Transmission Optical Glass High-transparency optical glass is used. It is made by dissolving high-purity raw materials and has high transmittance in a wide wavelength range from the visible to the infrared range. Black Ink Coating on the Outer Periphery of the Glass By applying black ink to the outer periphery of the filter glass, internal reflections are minimized. This reduces the occurrence of flare and ghosting during backlight shooting. Smooth Attachment and Detachment By applying lubrication to the lens mounting screw, the attachment and detachment to the lens is made smoother, reducing the chance of the filter getting stuck. Easy-to-Attach and Detach Knurling By applying knurling (anti-slip) to the entire circumference of the filter frame tip, the operability when attaching and detaching the filter is improved. Thin Frame Design that Reduces Vignetting when Using Ultra-Wide Angle Lenses Lens Cap Compatible UV Absorption Filter Case Made in Japan