When you click or drag an area in your image with the Pinch tool, it moves the outer areas towards the center of the brush, pinching that part of your image. You can use Pinch to make certain elements in an image smaller and less prominent.
In the Tool Options pane, customize the Pinch tool:
Brush Size: Drag the Brush Size slider to adjust the size of the Pinch tool brush. Hold down thekey to extend the range of the Brush Size slider beyond 100%. You can also manually enter a value from 0% to 200%.
Strength: Drag the Strength slider to adjust the intensity of the pinching effect.
Tip: You can use theand keys on your keyboard to change the size of the Pinch tool brush.
Click and hold down or drag an area of your image to pinch it.
Show Original: Click the Show Original button or press+ on your keyboard to see what the image looked like before you pinched anything in it.
Click Reset to discard all the current changes made with the Pinch tool.