K&F CONCEPT Lens Protection Filter 77mm - Lens Protection, Water-Repellent & Anti-Smudge, Scratch Resistant, Lens Protector, Ultra-Low Reflection 0.1%, Brass Frame, 36-Layer Nano Coating, High Transmittance 99.5%, No Color Cast, Water & Oil Repellent, Scratch Resistant 【Nano-Xcel Pro】 【Nano-Xcel Pro Protection Filter】This protector filter is designed to protect the front element of the lens without affecting the image quality. With a high transmittance of over 99.3%, it supports 4K and 8K resolution without compromising image quality. 【Brass Frame】The Nano-Xcel Pro protection filter features a corrosion-resistant brass frame that is resistant to deformation and maintains performance for a long time under various climatic conditions. Achieving an ultra-high transmittance of over 99.5% eliminates color cast and maximizes the original descriptive power of the lens. 【Ultra-Low Reflection】The reflection rate of the protection filter is controlled to 0.1%, effectively reducing lens reflections and halo effects, making images clearer and enhancing contrast. Receipt and proof of purchase are not available. Please refrain from price negotiations.