The 37mm Neewer MRC Ultra-Slim UV Filter reduces haze and minimizes ultraviolet (UV) rays while improving contrast. Featuring 30 layers of optical coatings and a light transmittance of up to 99.8%, the filter diminishes flare and ghosting while ensuring accurate color rendition. The coatings are also anti-static, oil-resistant, water-repellent, and scratch-resistant. The frame (or ring) of the filter is made of an aluminum-magnesium alloy and measures only 3.5mm in depth when screwed onto your lens.