Creates Glowing Highlights: K&F CONCEPT shimmer diffusion filter produces glowing highlights and a mild reduction in contrast. While maintaining the sharpness of the whole picture. Softens Skin Details: The shimmer diffusion filter helps to soften skin details, blemishes, and wrinkles. Recommend using it in video shooting and portrait photography. HD Optical Glass: Reducing reflections coming from the filter itself for razor-sharp images while maintaining the true colour of photos. 18-layer nano-coating: The anti-reflection green Dust-proof, waterproof, and anti-mildew to protect the lens. No Vignetting: Slim 3.3mm aircraft grade aluminium frame, effectively avoid vignetting on a wide-angle lens.