Description The Hoya Variable Density filter uses two polarizing layers to control the amount of light that passes through the filter and into the camera lens. After the filter is mounted on the lens, turning the filter ring between “Min” and “Max” can greatly control the amount of light entering the lens. With the Hoya Variable Density filter, it’s possible to shoot with fast lenses in full sun for a very shallow depth of field or to slow down the shutter speed to where the shutter can be open for several seconds in full sunlight.
