In my article No Edit Photography: 7 Tips To Get The Film Look From Your Digital Photos, I suggested that you should sometimes use diffusion filters (Tip 3) in order to better achieve an analog aesthetic. In that article I stated, “You want the effect to be subtle.” I think that’s generally good advice, as in most circumstances subtleness will get you the best results. But what happens when you ignore the “rules” and get crazy? What happens when you use multiple diffusion filters together in order to get a bold effect? This article will explore those questions, and hopefully it will inspire you to do your own experiments with diffusion filters.

Ready to get crazy?

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I don’t think diffusion filter designers deliberately intended for their filters to be stacked together, but of course creative people will experiment with something just to see what happens. Maybe it will be terrible, but maybe it will be great, so it is worth the time and effort to try. The idea to do this wasn’t actually mine—a Fuji X Weekly reader shared with me his pictures where he stacked diffusion filters—and I knew that it was something that I needed to try.

I currently own five diffusion filters: Tiffen 1/4 Black Pro Mist, Tiffen 1/2 Black Pro Mist, Moment 5% CineBloom, Moment 10% CineBloom, and Moment 20% CineBloom. The 1/2 Black Pro Mist is a different thread size than the others, so I didn’t use it for these experiments. Because the other four are the same 49mm thread, I was able to use them together on my Fujifilm X100V. My very first image using stacked diffusion filters was the picture below:

A bright lamp is just off frame in the upper-right corner of the picture. Combining the 10% & 20% CineBloom filters dispersed the highlights, softening the transition from bright white to shades of grey. There’s also a softening effect on the transition to black. It’s a greater effect than using the 1/4 Black Pro Mist on its own, and closer to the 1/2 Black Pro Mist (although I didn’t directly compare it to the 1/2 Tiffen filter).

Let me make a quick note of my impressions of Black Pro Mist vs CineBloom. Black Pro Mist seems to effect overall contrast slightly less than CineBloom while delivering similar halation (or highlight bloom); however, it also produces a barely visible warm/red color cast. CineBloom reduces contrast slightly more overall than Black Pro Mist, but doesn’t have the color cast. So they’re quite similar, yet produce a noticeably different look. For example, the 10% CineBloom is more similar to the 1/2 Black Pro Mist when it comes to overall contrast, but closer to the 1/4 Black Pro Mist when it comes to halation. Which is better? I can’t answer that for you. They both have strengths and weaknesses. Overall, I lean a little more towards liking CineBloom just a bit better, just because it doesn’t have the color cast.

Unsurprisingly, using the 10% and 20% CineBloom filters together produces a stronger effect compared to using the 20% alone. It is definitely stronger than using the 1/4 Black Pro Mist, and it seems to be as strong of halation as the 1/2 Black Pro Mist (although, again, I didn’t directly compare it to that filter). This combination noticeably reduces contrast, producing slightly “faded” (but still dark) shadows. Let’s look at a few.

The reduction in overall contrast is noticeable in the above pictures, which isn’t necessarily good or bad—it’s a matter of if you like it or don’t like it. When there’s a light source (like the image immediate above this) you get a misty effect (while it was partly-cloudy, it wasn’t misty). When the sun was near the frame, the halation was much too strong, and I didn’t like those pictures; however, when the light wasn’t too strong, the effect seems quite nice. I think the 20% filter or (especially) the 10% filter used alone (not used together) would have done better for the pictures with a bright light. The softer look created with stacked diffusion filters when there isn’t a bright light is actually rather lovely.

None of that, of course, is crazy. I said at the beginning of this article that we were going to get rather wild, so let’s get crazy! What happens when you stack a 1/4 Black Pro Mist, 20% CineBloom, and 10% CineBloom together? Let’s find out!

When there’s not a light source in or near the frame, the results of stacking three diffusion filters can be wonderful, with an elegant softness that you might really appreciate. I think the two pumpkin pictures at the top of this set show this effect especially well. Look at those beautiful tones! When there is a light in or near the frame, stacking filters can definitely produce a pronounced Orton effect—in some pictures it can be alright, and others not so much.

I have four different diffusion filters, but I’ve only showed you two combinations. I tried the 5% CineBloom, but it’s such a subtle effect that it didn’t make much sense to use it for these experiments (which are supposed to be crazy). I also tried the 1/4 Black Pro Mist with the 10% CineBloom and 20% CineBloom separately. Using the 1/4 Black Pro Mist with the 10% CineBloom is similar to using the two CineBlooms stacked together (not 100% the same, but similar enough). Combining the 1/4 Black Pro Mist and 20% CineBloom (without the 10%) is in-between using the two CineBlooms and using all three diffusion filters. In your own experiments, feel free to try any combination and see if you like the results.

Diffusion filters are great for taking the “digital edge” off of digital pictures to subtly give them a more analog aesthetic. My recommendation, if you like the effect, is to use a 5% CineBloom, 10% CineBloom, 1/8 Black Pro Mist, or 1/4 Black Pro Mist. Some people will find the 5% CineBloom and 1/8 Black Pro Mist to be too weak, and some people will find the 10% CineBloom and 1/4 Black Pro Mist to be too strong. You’ll have to decide what works best for you, and it might even be situationally dependent.

While not likely for everyday photography, stacking diffusion filters can give you a faded, misty, or Orton effect (depending on the light). You can sometimes get results that are especially nice. If you have more than one diffusion filter with the same thread size, I invite you to use them at the same time. The results can be serendipitous, producing pictures that you might dislike or that you absolutely love. I definitely captured a few that I love.