The Hoya Prond Ex 64 55mm filter reduces the amount of light passing through the lens by 6 stops. When shooting videos outdoors, it is possible to adjust the shutter speeds to match the frame rate while maintaining the desired depth of field. For capturing moving subjects, a motion blur is achieved that offers a more cinematic image. In photographic applications, the filter allows for longer exposures or achieving a shallow depth of field in bright sunlight.

The ProND EX 64 filter uses Hoya's ACCU-ND technology to prevent color shifts and provide consistent image quality. ACCU-ND ensures equal light reduction in both the visible and infrared spectrum, avoiding color changes when shooting under varying outdoor conditions. Additionally, stacking additional ND filters on the front or attaching threaded lens caps or other filters is possible.