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How To Remove Banding In Photoshop

By Max Bridge on June 22nd 2016

Digital artifacts are annoying, to say the least! For me, banding is one of the most frustrating issues. Within my product photography, banding is something I encounter all the time, and because of that, I’ve had to figure out what the best way of removing it is. Within this article, I’ll explain what banding is, how you can avoid it, and how to remove it.

What Is Banding?

Banding occurs either through editing or (more rarely) is an artifact you will see prior to any adjustments being made to your RAW files. The photo below is an extreme example of banding. I created a smooth gradient in Photoshop, lightened it using Levels, and then performed the opposite edit to bring it back. The result, as you can see, is anything but a smooth gradient. Instead, we are left with ugly lines which interrupt the tonal transitions.

how-to-remove-banding

Whether you edit in 8 bit or 16 bit (more on that later) there are a certain number of colors that Photoshop can display. If you’ve pushed and pulled your images, as we often do, it’s likely that there will come a point where Photoshop can no longer display a smooth transition from one shade to another. It’s at that point that patterns, like above, begin to appear.

It is possible to encounter banding straight out of camera prior to any editing. However, this is rare. So rare in fact, that I could not find an example photo from my own library. The best I could find is the photo you see above. The reason that this photo was more susceptible to banding was because of the very subtle gradient caused by the dense fog. The transitions in that area are so minute that even small amounts of editing caused it to appear.

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Banding can also appear after significant noise reduction or, as is so often the case for me, when creating gradients within Photoshop. I do this all the time with my product photography, and hence, banding is something I have come across time and time again. Wherever there is a subtle transition of color you’re in danger of seeing, or creating, banding.

remove-banding-quickly

How Can You Avoid Banding?

The first step, which I eluded to earlier, is to work in 16 Bit rather than 8 Bit. If you’re going from Lightroom to Photoshop, make sure that you go to Edit > Preferences and change the Bit Depth to 16 Bit. The reason that 16 Bit is superior to 8 Bit when it comes to banding is due to the number of colors it can display.

8 Bit = 16.8 million colors
16 Bit = 281 trillion colors

The difference between the two is gigantic. That’s why 16 Bit will give you a little more headroom as you push and pull your files, be that via exposure, color, etc. That additional headroom means that banding, while not impossible to create, will take longer to appear; especially if you’re only making minor adjustments.

Given that JPEG’s are 8 Bit files, the next tip may seem a little obvious: Shoot in RAW. If you’ve shot your images as JPEGs you cannot turn that file into a 16 Bit image. The info just isn’t there. Shoot in RAW and you’ll be far less likely to encounter the problem.

How Can You Remove Banding?

To remove banding we’re going to do something counter-intuitive. We’re going to add another artifact. One which you will all be familiar with: Noise. By adding noise (in the right way) we’re able to visually interrupt the banding. While this does not 100% remove the banding, it becomes far less discernible to the point that we barely notice it.

example-of-banding

The photo above shows a banding pattern I’m very familiar with. It’s been created by me adding a gradient to a black background in Photoshop. To remove something similar to this, or to remove banding in any of your photos, follow these steps:

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1) If working with an artificially created gradient (like mine), duplicate that layer. If working with a “normal” photo, merge your edits onto a new layer. What we are doing could quickly become destructive editing if you don’t retain a backup. That’s why you MUST duplicate the layer.

Guide-to-removing-banding

2) Go to Filter > Camera Raw Filter, navigate to the effects panel, and dial in whatever settings work. That statement is purposefully vague as different amounts of noise will be needed for different amounts of banding. In addition, as we are adding noise via the Camera Raw Filter, we have more control over its appearance and as such there is no “magic setting” which works every time. You’ll need to mess around and see what works.

how-to-remove-banding-using-photoshop

3) An additional step is to add noise to the background layer. I’ve found that this, if it’s possible, can be a massive help and allow far less noise to be added in general. Of course, if your images are more conventional photos (not composites), then this step will not be possible. In that case, the Camera Raw Filter should more than suffice.

This technique is a variation on the most common method, to “Add Noise”, which I often see suggested. That approach usually suggests adding Noise on a separate, 50% gray layer. I have found that by doing so you need to add more Noise to get rid of the banding. I also find that by simply going to Filter > Noise > Add Noise, there is very little control, all you can do is decide between Uniform and Gaussian and select an amount.

Conversely, by adding noise in this way, you have more control over the look of the Noise and I often find less Noise is needed. After all, Noise is an artifact in itself and not something we want to add too much of.

Summary

The key to this technique is to apply the Noise directly to the layer which displays the banding and not onto a separate layer. The risk there, however, is to ruin your image. Therefore, I repeat, please duplicate the layer first. You could convert your duplicated layer into a smart filter (Filter > Convert for smart filters) but I tend to stay away from smart filters as they cause big edits to become very slow!

If you have any other pesky issues that always bother you, be sure to comment below. I love taking inspiration for articles directly from you.

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About

Max began his career within the film industry. He’s worked on everything from a banned horror film to multi-million-pound commercials crewed by top industry professionals. After suffering a back injury, Max left the film industry and is now using his knowledge to pursue a career within photography.

Website: SquareMountain 
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5 Comments

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  1. Gabriel Rodriguez

    Awesome! Thank you, Max! I’ve encountered this on some my shots, as well. Very helpful.

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  2. Quintin Mills

    Hi.
    2 questions about banding.

    1. Can it show up more on newer 2.5k monitors with more colors etc?
    2. If you shoot in RAW, process and then export Jpegs from lightroom they can only be exported as 8bit, how do you get around that? It would be a hige folder if you exported 1000 wedding images as PSD’s just to avoid any possible banding.

    Thanks.

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    • Max Bridge

      Hey Quintin,

      1) Sorry, I don’t have a monitor like that so can’t test. I wouldn’t have thought so though. No monitor can get anywhere near to displaying Prophoto RGB. As far as I know, wide gamut displays which cover Adobe RGB are the best right now, which is what I use. I could be wrong there though. Never had the budget for really expensive monitor.

      2) So long as banding is not visible while your editing, it shouldn’t become visible when you export, at least I’ve not experienced that.

      While working in LR you are working on the full bit depth of your images. So long as you don’t see any issues you should be fine. However, if you exported to PS as an 8 Bit file, and messed around with THAT file there is more potential for banding to appear. Most of the time, it won’t, but if you’re doing heavy edits, pushing and pulling the file (as I demonstrated) you may begin to see it.

      I hope that helps

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  3. Umar Junaid

    Creating a “stamp visible layer” and making that the top layer also removes banding, at least with the canon (notorius for the banding problem) studio shots. Makes the file size bigger though.

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  4. Donna Macauley

    Great tip. Banding is such an annoyance.

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