The HOYA Variable Density II is a variable density filter with an ND range from 1.5 to 9 f-stop (ND3-400).

The difference with the previous HOYA variable density filter is the newly designed rotating frame with a convenient button, allowing for better operation.

Variable density filters are widely used because they can replace a set of solid ND filters by providing a density range that can be adjusted according to the desired exposure settings.

During shooting, variable density filters reduce the shutter speed according to the photographer's intentions when the shutter speed cannot be reduced due to the camera's limitations.

Variable density filters can also increase the amount of bokeh when shooting in overly bright conditions, thus preventing the image from being overexposed.