The ACCU-ND technology in Hoya PROND filters delivers truly neutral color that will not add any noticeable color cast to your images. The Hoya PROND series targets both the photography and HDSLR market. The series provides 9 filters, ranging from 2-stop to 10-stop light reduction.

The ACCU-ND metallic coating on PROND filters prevents color shift as you change from one denser filter to another, a common issue with other neutral density filter series. Now you can set your white balance once and have consistent color balance, even if you need to change filters due to changes in lighting, or for creative effects.

PROND filters exclusively use Hoya optical glass that has a metallic ACCU-ND coating to create the neutral density effect.

Neutral density filters are designed to reduce the amount of light entering your camera lens and should have no other impact on the image. Reducing the amount of light allows for the use of larger apertures or slower shutter speeds for creative and dramatic effects in bright lighting conditions.

The PROND500 provides 9-stop light reduction equivalent to 2.7 optical density ND.