In this tutorial, we will use an example to experience the special effects created by Photoshop's high contrast preservation filter.
Original picture:
Open the original image, duplicate the layer, and then press Ctrl+Shift+U to remove the color.
implement.
The settings are as follows.
Create a new Levels adjustment layer.
Levels settings.
Merge the two layers above and change the layer mode to Overlay.
Final effect.
