The Hoya 72mm Pro ND4 Filter has a 2-stop light reduction equal to an ND optical density of 0.6. The ACCU-ND technology in the Hoya PROND filters yields a truly neutral colour balance that will not add any noticeable colour-cast to your images. The Hoya PROND series is aimed at the still photography and HDSLR video markets. The series provides 10 filters from one stop to 10 stop light reduction. The Metallic ACCU-ND coating on the PROND filters do not colour shift as you move from one density to the next, a common problem with other series of neutral density filters. Now you can set your white balance once and have the same colour balance even if you need to change filters due to changes in lighting, or for creative effect.

The PROND filters use Hoya exclusive clear optical glass that has a metallic ACCU-ND coating front and back to create the neutral density effect.

Neutral density filters are designed to reduce the amount of light entering your camera lens and should not have any other effect on the image. Reducing the amount of light allows for the use of wider apertures or slower shutter speeds for creative and dramatic effects in bright lighting conditions.

Features:

2-Stop Neutral Density Filter

0.6 Solid Optical Density

Permits Increased Exposure Length

Metallic ACCU-ND Coating

Clear Optical Glass Construction

One-Piece Aluminum Ring