• Variable ND filter: K&F CONCEPT ND2-400 filter reduces the light from gear 1 to gear 9
• Material: Made of complete professional optical glasses, with double-sided multi-layer blue coating, which helps to prevent water
• Reduce exposure: ND filter is applicable to rivers, waterfalls and other water bodies, especially in strong light. Longer exposure time allows smoother water motion, shallower depth of field, and blurry motion
• Ultra thin: the filter frame is only 7.3 mm, and the ultra light CNC ring used in construction can prevent adverse effects

Note: This filter kit is compatible with all 82mm lenses. Please verify the lens thread size of your camera before ordering.