K&F Concept 37mm Variable ND Filter ND2 ND400 Multi Coated Neutral Density Optical Glass with Blue Coating for DSLR Camera Lens Slim (Nano K Series)

【High-end Japanese optical glass】K&F Concept variable neutral density filter made of high-end Japanese optical glass, double-sided multilayer blue coating is conducive to waterproof and dustproof. 【Reduce Exposure】ND2-400 Reduces light intake from 1 to 8.66 f-stops, which is especially suitable for rivers, waterfalls and other waters, especially under strong light. 【Double anti-reflective coating】Allows the use of slow shutter speeds on high speed films or digital cameras to record movement/image blur in waterfalls, clouds or any fast moving subject. 【Ultra-Slim frame】Adopt aviation aluminum alloy frame, only 7.3mm, ultra slim rim design preventing wide angle vignetting 【Note】This ND Filter is compatible with all 37mm lenses. Please verify your camera's lens thread size before ordering. Your camera's lens thread size will be marked somewhere on the lens barrel or printed underneath your lens cap. This number is always preceded by a "ø" (diameter) symbol.