The Mist Diffuser Black No. 0.5 filter from Hoya diffuses light sources, creating a soft glowing effect around highlights. It reduces overall contrast, especially in shadows, and helps create a cinematic look in still images and videos.

The result includes an increase in halo and "bloom" of highlights and reflective light sources, and a reduction in contrast, wrinkles, and skin blemishes for a softer and more romantic appearance. The filter has a similar effect as filters rated 1/8 compared to cinematic fog filters.

The cinematic fog effect is created by the even distribution of a fine black nano powder between two layers of optical glass. The filter is made from optical glass, maintaining image detail, without coatings for enhanced flares. The thin aluminum frame allows for use on wide-angle lenses without vignetting.