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How To Use The High Pass Filter in Photoshop

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Are you looking for a new way to deal with a slightly blurry photo? The Photoshop high pass filter does a great job sharpening images.

I’ll show you how to sharpen your images quickly in Photoshop with the high pass filter.

Why Use the High Pass Filter?

The high pass filter isn’t in the sharpening menu. But there are a few reasons why should you use it for sharpening.

First of all, it’s easier to use than other sharpening tools. There’s only one slider to worry about.

A screenshot showing how to use the High Pass Filter in Photoshop

Also, the high pass filter is an edge-detection filter. Why is that important? Because sharpening a photo is about increasing edge contrast.

To find these edges, Photoshop looks for a sudden change in brightness between neighboring pixels. The high pass filter was developed to do just that.

How to Use the High Pass Filter to Sharpen an Image

Let’s sharpen an image in Photoshop with the high pass filter.

Step 1: Duplicate the Background Layer

First of all, duplicate the layer by using the shortcut Cmd + J (Ctrl + J for windows).

You can also right-click on the layer and select “Duplicate Layer…”. Click “OK” when a new window pops up.

A screenshot showing how to use the High Pass Filter in Photoshop - duplicate the background layer

Zoom in to 100%. This is important because we don’t want to apply too much sharpening.

Step 2: Apply the High Pass Filter

Make sure the new layer is selected. Go to Filter > Other and select “High Pass…”.

Your photo will turn grey and you’ll be able to see the edges that the high pass filter detects.

A screenshot showing how to use the High Pass Filter in Photoshop

Step 3: Adjust the Amount of Sharpening

The amount of sharpening you can do depends on the photo and size of the photo. It’s best to experiment with different settings to avoid unwanted artifacts in your photo. Too much sharpening will look unnatural.

You can use the preview as a guide. Usually, you’ll get the best results when you see thin black lines and no white. Sometimes the lines are barely visible.

White areas will create unwanted halos in the end result. In my example 0.9 works fine.

A screenshot showing how to use the High Pass Filter in Photoshop -

A screenshot showing how to use the High Pass Filter in Photoshop

Click OK when you’re ready.

Step 4: Set the Blending Mode

To create the sharpening effect, we need to change the blending mode of the layer.

Open the Blending Mode dropdown menu and set the blending mode to Overlay. You’ll see color again and the photo is now sharpened.

A screenshot showing how to use the High Pass Filter in Photoshop - set the blending mode

A screenshot showing how to use the High Pass Filter in Photoshop - set the blending mode

You can double-check the result by turning the layer with the high pass filter on and off.

Remember, we’re looking for a subtle and natural sharpening.

A screenshot showing how to use the High Pass Filter in Photoshop

Depending on your photo, you can experiment with different blending modes.

You can even change the opacity of the layer to soften the sharpening.

A screenshot showing how to use the High Pass Filter in Photoshop - change opacity of the layer

We’ve created a new layer so this technique is also non-destructive. This means that we always have the original image available if the end result is not as expected.

This technique even allows you to use masking. With masks, you can apply the sharpening effect only to certain areas of the photo.

Conclusion

As always, there are many tools available in Photoshop to do the same task. If you want to sharpen an image, next time, try the high pass filter.

It’s not in the Sharpening menu but it does a great job and it’s easy to use. You’ll find out in no time which settings work best for your photos.

Why not check out how to use grids and guides in Photoshop, use PS brushes, or create surreal levitation photography next!

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