Tiffen Black Pro-Mist and NiSi Black Mist are both diffusion filters that soften highlights, lower contrast slightly and add a gentle glow around bright lights for a more cinematic image. Tiffen’s Pro-Mist line has a long history in film and video, while NiSi’s Black Mist is a newer option in the same style. We have not used either, so confirm strengths and sizes on the maker pages.
What a Black Mist Filter Does
A black diffusion filter spreads light from bright areas, such as lamps, windows and reflections, into a soft halo. Because it is a dark-toned diffuser, it leaves blacks richer than a white-toned one would, so the effect feels like glow without a milky haze. It also takes the digital edge off sharp modern lenses and sensors, which is a large reason video shooters like it.
- Stronger grades give more glow and lower contrast.
- Lighter grades, such as 1/8 or 1/4, are common for skin and general use.
- Results change with aperture, lens and the brightness of the scene.
Comparing the Two
| Point | Tiffen Black Pro-Mist | NiSi Black Mist |
|---|---|---|
| Background | Established name in film work | Newer, aimed at photo and video users |
| Strength grades | Multiple grades | Multiple grades |
| Format | Screw-in, square and round options | Screw-in, square and holder options |
| Look | Soft glow, rich blacks | Soft glow, rich blacks |
Both aim for a similar result, and the visible difference between grades is usually bigger than the difference between brands. Look at sample footage from the makers and independent users to compare halation and flare behavior.
How to Choose
- Decide whether you shoot mostly video, portraits or night scenes. Night scenes with visible lights show the effect most.
- Choose a strength. Lighter grades suit portraits and daytime work, and stronger ones suit night and music scenes.
- Pick a format: a screw-in filter fits one lens thread, while a square filter works with a holder across many lenses.
- Match the size to your largest front lens thread, and use step-up rings if needed.
- Check compatibility with wide lenses, since thick frames can cause dark corners.
Using the Filter
Wide apertures show a gentler effect, while smaller apertures often make the glow more visible. Keep the glass clean, because dust and fingerprints add their own haze. You can stack a variable neutral density filter with it, though extra glass can add flare, so keep the stack as thin as possible.
FAQ
Can I add the same look in editing?
Software glow tools can imitate it, but optical diffusion responds to the real light in the scene, which is why many shooters prefer it in front of the lens.
Will it make my images look out of focus?
Light grades keep detail and soften only highlights. Very strong grades will visibly reduce sharpness, so test the strength that suits your taste before an important shoot.
The Short Version
Both filters deliver a gentle cinematic glow. Choose by strength grade, filter format and size, and use sample images from the makers to settle the finer differences.
