1. After opening the picture to be processed, you can find that the picture is too dark and the bright part is gray.

2. After analyzing the problems in the picture, copy a new layer first.

3. When the picture is too dark, it can be adjusted by the color scale in PS to change the gloomy problem of the picture. Select Image-Adjust-Levels or Ctrl+L shortcut key to open the Levels Settings panel.

4. After entering the color scale setting panel, drag the small white triangle to brighten the picture. At the same time, click Preview to switch and compare the effects.

5. After adjusting the image color scale, click OK to get the final processed effect.

6. In the process of adjusting the color scale, we should pay attention to the adjusted effect. If the white triangle is pulled too far, the picture will be too bright and dazzling.