Double anti-reflective coating, only 7mm thickness ultra thin frame
• Allows for variable light reduction from between 2-8 stops; protect your lens from dust and scratches
• Decrease the depth of field by using wider apertures, which helps separate subjects from their background
• Allows the use of slow shutter speeds, with high speed films or digital cameras, to record movement/ image blur in subjects such as waterfalls, clouds or any fast moving subject
• To avoid vignetting at wide angle lens, this filter has a special front lens, the diameter of the front lens is larger than that of the rear lens