For example: Φ52 = 52mm lens thread size. 28 Multi-Layer Coatings. Both glass sides with coatings ,ensures the light transmittance reach to 99.6%, no affect for the image quality. 【Prevent UV Ray & Protect Lens 】UV filter has two functions, one is to prevent CCD has affected by UV ray and weakens the blue tone in images caused by UV, ensuring clarity and color.
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