The Hoya Prond Ex 64 49mm filter reduces the amount of light passing through the lens by 6 stops. When shooting video outdoors, it facilitates adjusting shutter speeds to match the frame rate while maintaining the desired depth of field. In photography, it allows the use of longer exposures or achieves a shallow depth of field in bright sunlight.

The ProND EX 64 filter utilizes Hoya's ACCU-ND technology, which prevents color shifts and provides consistent image quality. The ACCU-ND ensures equal light reduction in both the visible and infrared spectrum, so there are no color changes when shooting under different outdoor conditions.

Additionally, extra ND filters can be stacked on the front, or a threaded lens cap or another filter can be attached.