The sharpening tool is used to make the blurred parts in the picture clearer. The use steps are as follows:

Materials required: PS CS6 example.

First, open a fuzzy picture in PS for demonstration.

Secondly, choose to use the sharpening tool in the tool window on the left.

Third, then adjust the size and hardness of the sharpening tool.

Fourth, finally smear the stone bridge in the picture to make the area clearer.