K&F Concept 1/4 Black Soft Filter Product Features Reduces highlights and lowers glare. Surface high-tech film waterproof, scratch resistant and oil proof. Optical glass doubleside polishing techonlogy ensuring the HD image quality. Soften wrinkles, blemishes and pores while maintaining skin tone values, making wrinkles less noticeable. Creates a soft quality of light and pastel effect, delicate and hazy cinematic effect, provide a smoothing effect on skin tones. Uses K&F Concept Multi-layer Coating process to protect the filter effect between two pieces of glass, dosen't effect image quality.