Brush Tools Command Mac OS Windows Brush Controls Dropper Option Alt Layer Adjuster Command Ctrl Resize Brush Shift + Option + Command Shift + Alt + Ctrl Increase Current Brush Size Incrementally ] ] Decrease Current Brush Size Incrementally [ [ Constrain to 45 degrees Shift Shift Adjust Opacity in 10% Increments 1 to 0 keys 1 to 0 keys Unconstrained Draw Shift + 1 Shift + 1 Draw Outside Shift + 2 Shift + 2 Draw Inside Shift + 3 Shift + 3 Load Nozzle Command + L Ctrl + L Cloning Set Clone Source Option Alt Set Clone Destination Option + Shift Alt + Shift Re-link Clone Source Command + Option + Clone Ctrl + Alt + Clone Colors Correct Colors Command + Shift + K Ctrl + Shift + K Toggle Between Primary and Secondary Colors Shift + X Shift + X Gradations Adjust Spiral Command + Angle Adjuster Ctrl + Angle Adjuster Paint Bucket Limit Fill Extent Drag Drag Dropper Option Alt