Neutral density filters are designed to reduce the amount of light entering the camera lens and should have no other effect on the image. Reducing the amount of light allows you to use wider apertures or lower shutter speeds for creative and expressive effects in bright lighting conditions.
The ACCU-ND technology used in Hoya PROND filters ensures a truly neutral color balance, allowing you to capture images without any noticeable color aberration.
The metallic ACCU ‑ ND coating covering the PROND filters does not change the color tone when moving from one density to another - a typical problem for other series of neutral density filters. Now you can set the white balance once and maintain the same color balance even if you need to change the filters due to lighting changes or artistic effects.
To create a neutral density effect, the PROND series filters use Hoya's exclusive clear optical glass, which is coated on the front and back with a metallic ACCU ‑ ND coating.
All Hoya PROND series filters have a low profile one-piece aluminum frame. The thin frame securely encloses the glass and holds it parallel to the sensor, allowing the filter to be used with ultra-wide-angle lenses.
