1. One-eighth strength of black soft filter
2. It is mainly used in dynamic images
3. The main effect is to soften the picture, because the picture is too sharp, or effectively reduce some wrinkles and spots on the actor's face
4. Multi-layer coating is used on both sides of the lens, which can effectively improve the ghost and other problems, and the light transmittance reaches 84 percent
5. Lens polishing and grinding on both sides, mildew proof, waterproof, scratch proof, oil proof