2. Open the Curves dialog The figure shows how. Click on the Image menu, then the Adjustments submenu, and finally on the Curves item. The key sequences to the right of the menu show shortcuts which you can use instead of the mouse. In this case Command-M on a Mac or Alt-M on windows would also bring up the curves dialog.

2. Open the Curves dialog The figure shows how. Click on the Image menu, then the Adjustments submenu, and finally on the Curves item. The key sequences to the right of the menu show shortcuts which you can use instead of the mouse. In this case Command-M on a Mac or Alt-M on windows would also bring up the curves dialog.