Adjustable Neutral Density Fader - Variable Camera Lens Filter. Feature: Reduces the Amount of Light Coming into the Film Without Affecting Color. Apply Slow Shutter Speed Under Exposure to Strong Sunlight. Glass Mounted with High Pressure Press Technology. Made of High Quality Optical Glass by K&F Concept Technology.Wider External Optics to Help Reduce Vignetting at Wide Angles. Seiko Extinction Paint Production, to Achieve the Appearance Tests on Military Standard. ND Filter Function: Neutral Density Can Be Adjusted from ND2 to ND400, Reducing the Amount of Light Coming into the Film Without Affecting Color. There is Control of Each Lighting Environment. Allows Wider Openings, Effectively Descending to the Depth of a Field. Suitable for Dynamic Screen, Waterfalls, Streams, Waves, Etc. Specifications: Type: Fader Variable ND2-ND400 Model Number: ND2~ND400 Lens Filter Package: Yes Type: Adjustable ND2-ND400 Lens Filter Lens Size: 37/40.5/43/46/49/52/55/58/62/67/72/77/82mm Material: Optical Glass+Aviation Aluminum Alloy For: Nikon Canon Sony Olympus DLSR Camera Note: 1. Please Make Sure Cameras of Wire Size Lens Before Ordering.This Number is Always Preceded by an "" (diameter) Symbol. 2. When Using ND Filter to Maximum (ND400) or Greater Degree of Density, It Will Appear "X" Spot or Blur in the Image, This is a Normal Phenomenon. (Suggestion: Gradually Lower the Value Density and Reduce the Aperture, Until the Facula Disappears). We are an international based seller that will ship your order from abroad, please at least a minimum 14 working days for delivery right now due to the ongoing delays in shipments globally.