This 86mm Nano-X Variable ND Filter from K&F Concept is a variable neutral density filter with a range of 1 to 5 stops. The density can be continuously adjusted by rotating the knurled aluminum ring. Increasing exposure density allows the use of a wider aperture setting, providing finer control over depth of field, which can help isolate the subject of an image. Increased density can also be used to lengthen shutter speed to enhance motion blur, as when shooting moving water. A variable density filter is also useful to control camera frame rates when shooting video.
Key features include:
- Variable 0.3 to 1.5 Optical Density
- Multicoating and Resistance Coating
- Optical Glass Construction
- Aluminum Filter Ring, Threadless Front
