How To Sharpen Images in Photoshop
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High pass sharpening in Photoshop uses the High Pass filter and a blend mode to sharpen a photo without a dedicated sharpening tool.
In this tutorial, you will learn how to sharpen images in Photoshop.
Almost every photo that you take can benefit from some amount of sharpening.
Photoshop gives you several options for applying sharpening to an image, as you will see in the corresponding video for this tutorial.
But no matter what method you use, you must understand that Photoshop cannot bring back or add any new detail to the photo.
Photoshop can only create the illusion of sharpness by increasing the contrast of edge pixels, making it seem as if there is more detail in the image.
The tools we will look at are the High Pass filter and the Camera Raw filter. For the full walkthrough of the Smart Sharpen filter too, see Two Ways To Sharpen Photos in Photoshop.
There are three types of sharpening that you can apply to a photo, Capture Sharpening, Creative Sharpening, and Output Sharpening. But in this video, we will mainly focus on capture sharpening.
Key Takeaways
- Sharpening never restores lost detail. It adds contrast along edges so the eye reads the image as sharper.
- High pass sharpening in Photoshop uses a blend mode instead of a dedicated sharpening filter, so it skips sliders like Amount and Radius entirely.
- A JPEG starts with the Camera Raw Sharpening amount at 0, while a raw file starts at 25, because the camera already sharpened the JPEG when it saved it.
- Judge sharpening only at 100% zoom. Any other zoom level shows interpolated pixels, not the real result.
- The Masking slider in Camera Raw builds an edge mask automatically: white areas get sharpened, black areas do not.
- Pushing the Detail or Amount slider too far raises noise faster than it raises real sharpness.
Table of contents
- What You Will Learn
- Requirements
- Keyboard Shortcuts for Sharpening with High Pass in Photoshop
- Types of Sharpening
- Capture Sharpening
- Creative Sharpening
- Output Sharpening
- High Pass Sharpening in Photoshop
- Duplicate the Layer for High Pass Sharpening
- Apply the High Pass Filter
- Desaturate the High Pass Layer
- Blend the High Pass Layer to Sharpen the Image
- How to Sharpen Images in Photoshop’s Camera Raw
- 100% View
- The Amount Slider
- The Radius Slider
- The Detail Slider
- The Mask Slider
- Reduce The Noise Caused by Sharpening
- Frequently Asked Questions
- Final Thoughts on Sharpening with High Pass in Photoshop
- Related Links
What You Will Learn
- How to sharpen a photo with the High Pass filter and a blend mode
- How the three types of sharpening differ: capture, creative, and output
- How to control sharpening precisely with Camera Raw’s Amount, Radius, Detail, and Masking sliders
- How to reduce the noise that sharpening introduces
Requirements
Before you start
- Photoshop 2017 (version 18.0) or the current version
Keyboard Shortcuts for Sharpening with High Pass in Photoshop
| Action | Windows | macOS |
|---|---|---|
| Duplicate the layer | Ctrl J | Command J |
| Desaturate the layer | Ctrl Shift U | Command Shift U |
| Preview the Masking slider or reveal a mask | Alt | Option |
Types of Sharpening
Capture Sharpening
The sharpening you apply to an image brings back the sharpness lost through capturing the image to a sensor and converting it to a digital format: The demosaicing process.
To offset this loss of detail, when you open a RAW file in Camera Raw or Lightroom, you will see that the Sharpening “Amount” is set to 25 by default.
If you open a JPG, instead, you will see that the Amount is set to 0, because your camera or the device adds sharpening during the compression process.
Creative Sharpening
Creative Sharpening is applied selectively based on artistic intent. It is an effect that tends not to be realistic or subtle.
Output Sharpening
The last step before output. After you reduce the image size and before exporting it as a JPEG or before printing the image. Printing and downscaling an image may soften it and require a bit of sharpening to bring back some detail.
High Pass Sharpening in Photoshop
High pass sharpening in Photoshop starts with the High Pass filter instead of a dedicated sharpening tool.
Duplicate the Layer for High Pass Sharpening
Duplicate the layer with CtrlJ (Windows) or CommandJ (macOS).
Apply the High Pass Filter
Choose Filter > Other > High Pass. Set the Radius to around 1 to 2 pixels and click OK. The layer turns mostly gray, with only the edges still showing.
Desaturate the High Pass Layer
The High Pass layer usually keeps a little of the original color, so desaturate it with CtrlShiftU (Windows) or CommandShiftU (macOS). That removes the color without touching the sharpening.
Blend the High Pass Layer to Sharpen the Image
Change the layer’s Blend Mode to Overlay to apply the effect. Soft Light gives a subtler result, and Linear Light gives a stronger one.
To see how these modes calculate contrast, read Blending Modes Explained.
Tip: This method sharpens the whole image at once. Add a layer mask and paint with black to hold the effect off an area like the sky. Or build a targeted edge mask the way this Detail Mask tutorial does.
How to Sharpen Images in Photoshop’s Camera Raw
This section covers the Camera Raw method in more detail. The video also shows the High Pass filter and Smart Sharpen, both covered above.
I think that Camera Raw offers the best solution.
100% View
Start by changing the View.
When applying sharpness, always view the image at 100% so you can see how the image is being affected. Any other view is inaccurate or misleading.
The Amount Slider
The Amount slider controls how the intensity of the sharpening effect.
If you push sharpening too far, it can create edge halos or increase the noise in the photo. It is always a good idea to keep your adjustments as subtle as possible.
There are no rules or settings that you should always use. The amount of sharpening that looks good depends on the contrast of the image’s texture. The only thing that seems to hold true in most cases is that you should apply subtle adjustments.
The Radius Slider
Remember that the Sharpening Slider only creates the illusion of detail and sharpness by adding contrast to edges. It makes one side of the edge darker and the other side brighter.
This effect is more noticeable on edges that already contain contrast, like a mountain against a sky.
No matter what image you have, if you look closely, you can see the contrast, the dark and bright edges, that create the sharpening effect.
The Radius slider controls the thickness of the edge where the contrast is applied. Lower values give you a thinner edge, while larger values give you a thicker edge.
The Detail Slider
As the name suggests, the Detail slider controls the amount of sharpening to the details in your image.
A low value such as 0 only sharpens large edges, while a high value will sharpen even the most minor edges or details.
As you drag the Detail slider to the right, you start adding the sharpening effect to areas with small detail.
Pushing the Detail slider to the far right increases noise because the sharpening effect is applied to even the smallest details in the photo.
The Mask Slider
The Masking slider controls where the effect is applied.
At “0”, no masking is applied to the image, and the entire image is sharpened.
As you drag the Masking slider to the right, the sharpening effect starts disappearing from the areas without much detail, such as the sky.
If you have trouble seeing what the Masking slider is doing, hold Alt (Windows) or Option (macOS) as you drag the slider.
With the Masking slider set to 0, you will see that the image turns white, which means that the sharpening effect is applied to the entire image.
But if I move the slider to the right, you will start to see some areas become black.
Black hides the sharpening effect, while white reveals the sharpening effect.
The Masking slider helps you remove the extra noise produced by the “Amount” and “Detail” sliders.
Reduce The Noise Caused by Sharpening
Pay attention to the noise in your image as you are sharpening it.
Using the Masking slider, you can avoid the trade-off between sharpness and noise to a certain extent. But sometimes, you will still have noticeable noise around your edges.
Reducing noise is simple to do in Photoshop’s Camera Raw.
If compression artifacts are the real culprit, see how to remove JPEG compression artifacts in Photoshop with the Reduce Noise filter’s own artifact removal option.
Click on the Detail tab, and under Noise reduction, drag the Luminance slider to the right.
Frequently Asked Questions
It duplicates a layer, applies the High Pass filter, then sets the layer’s blend mode to Overlay, Soft Light, or Linear Light. The filter isolates edges, and the blend mode uses that edge detail to add contrast.
No. Sharpening only creates the illusion of detail by increasing contrast along existing edges. Photoshop cannot recover detail a camera never captured.
Capture Sharpening restores detail lost when a sensor captures and compresses an image. Creative Sharpening is an artistic effect applied selectively. Output Sharpening is the last pass, applied after resizing an image for print or the web.
A raw file has no sharpening applied yet, so Camera Raw adds a default Amount of 25. A JPEG already has sharpening baked in from the camera, so the default starts at 0 to avoid doubling up.
The Masking slider builds an edge mask for the sharpening. At 0, the whole image is sharpened. Raising it keeps the sharpening on the edges and removes it from flat areas like the sky.
Any zoom level other than 100% shows interpolated pixels on screen, not the real ones. The sharpening effect looks inaccurate and can mislead you until you view the image at full size.
Final Thoughts on Sharpening with High Pass in Photoshop
Sharpening in Photoshop comes down to picking the right tool for the situation. The High Pass filter method needs no dedicated sharpening tool, Camera Raw gives the most visual control, and Smart Sharpen sits in between.
Start subtle, judge the result at 100% zoom, and let the Masking slider or a layer mask keep the effect off areas that do not need it.
Watch the full video above to see every method applied to the same photo.
Selections and Masking Mastery
Complete course includes 2.5 hours of step-by-step lessons, 6 structured modules, downloadable practice files, and custom Photoshop brushes. Everything you need to master selections and masks in one place.
Keep going
Next, get the full walkthrough of the other two methods in Two Ways To Sharpen Photos in Photoshop.
