
Adjusting brushes with brush controls 381
Brushstrokes with Smoothness set to 0% (top) and 100% (bottom)
Volume controls the height of the brushstroke, or the amount of medium applied to
the image. Higher values result in thicker strokes.
Brushstrokes with Volume set to 100% (top) and 500% (bottom)
You can also use the Expression settings to link Volume to various stylus or mouse
movements. For example, you can link Volume to the Wheel expression to control the
amount of spray from the Liquid Ink airbrush by adjusting the wheel on the airbrush
stylus. The wheel on the stylus acts like a needle control on a real airbrush.
In addition, you can adjust the Min Volume setting to specify the range of variability
that you want the expression to apply. The Min Volume setting represents a percentage
of the Volume setting and it must be linked to an expression to have an effect. For
example, if you choose the Wheel expression on the Liquid Ink panel, set the Volume
slider to 40%, and then set the Min Volume slider to 50%, the volume will vary from
20% to 40% every time you use the stylus wheel to apply spray.
You can use the Depth controls to give Liquid Ink brushstrokes the appearance of
height. For more information about Depth controls, see “Impasto controls” on
page 373.
Rand Vol controls the randomness in volume within the brushstroke. A value of zero
results in a perfectly smooth brushstroke.
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