The transmittance of K&F Concept ND8 Filter is 12.5%, dimming factor is 0.9, has 3 stops, ultra slim only 3.3mm ND filter means there is no vignetting even in wide-angle lens and telephoto lens. This ND8 filter made by import AGC Japanese optical glass, double side 28 multi-layer coatings, effectively reducing the reflections came from filter itself, provids first class image quality.
Function
The main purpose of ND filter is to avoid overexposure, can use slow shutter to shooting under strong light , ND8 Filter not only can resist too much light but also can protect the lens, hydrophobic and dust-proof.
3 Stop
ND8 Filter provides a fixed 3 f-stop light reduction, which allows long exposure and motion blur techniques, perfect for landscape photography and cinematic effects in videography.