The Airbrush tool emulates a traditional airbrush. This tool is suitable for painting soft areas of color.
You can activate the Airbrush tool in several ways :
From the image-menu, through :
→ →By clicking on the tool icon: in the Toolbox,
By using the A keyboard shortcut.
Ctrl changes the airbrush to a Color Picker.
Shift places the airbrush into straight line mode. Holding Shift while clicking the mouse will generate a straight line. Consecutive clicks will continue drawing straight lines that originate from the end of the last line.
Normally, tool options are displayed in a window attached under the Toolbox as soon as you activate a tool. If they are not, you can access them from the image menu bar through
→ → which opens the option window of the selected tool.See the Common Paint Tool Options for a description of tool options that apply to many or all paint tools.
Motion only: if this option is checked, the airbrush paints only when it moves.
The Rate slider adjusts the speed of color application that the airbrush paints. A higher setting will produce darker brush strokes in a shorter amount of time.
This slider controls the amount of color that the airbrush paints. A higher setting here will result in darker strokes.