Sharpen Image With High Pass Filter
Photoshop CS6 Tutorial
How to Sharpen Image with High Pass Filter in Photoshop
You can sharpen images in multiple ways in Photoshop. This method uses the High Pass Filter to improve the image sharpness.
Another way to sharpen an image is with the Unsharp Mask. For more information, see topic, Sharpening an Image.
Open an image in Photoshop (File > Open).
Select the Background layer in the Layers panel (Window > Layers) and press Cmd/j (PC - Ctrl/j) to duplicate the layer.
Change the upper layer blending mode to Overlay, then right-click the upper layer and choose Convert to Smart Object. This will allow you to return to your filter settings and re-adjust if necessary.
Select the upper layer and choose Filter > Other > High Pass.
Adjust the slider in the High Pass dialog box and watch the image. Lower values work best. Click OK to accept your settings.
If you want to remove the sharpen effect from portions of the image, add a layer mask by clicking the Add Layer Mask icon.
Using the Brush tool (b key), paint the Mask in black to remove the sharpen effect in portions of the image.
You can reduce the effect by dropping the Opacity of the upper layer.
To increase the effect, double-click the High Pass filter in the Layers panel and increase the Radius setting.
For portraits you may want to sharpen selective areas such as the eyes, lips hair and jewelry.
Doubling the Effect
In Step Nine we increase the effect by re-opening the High Pass filter settings. Another option is to duplicate the entire upper layer by selecting the layer and choosing Cmd/j (PC - Ctrl/j).