Hoya Variable Density Filter
Hoya has released a new adjustable neutral density filter that lets photographers precisely control the amount of light entering a lens. The Hoya Variable Density filter uses two polarising layers to reduce light by between 1.5 and 9 stops as the filter is rotated.
Neutral density filters are widely used by photographers to shoot with wide apertures in full sun for a very shallow depth of field or to slow down the shutter speed to the point where the shutter can be open for several seconds in bright sunlight.
The filter is made from high-quality optical glass and is available in lens diametres of 52, 55, 58, 62, 67, 72, 77, and 82mm. Retail prices range from $179 (for the 52 and 55mm) to $319 (82mm).